is the indefinite
that occur in apparently
succession from the
to the future
- Time is Relative
- Time Travel
What does Time
mean to a Human?
Time is a tool
that humans use to
events. Human time is
based on one full rotation of the earth on it's
and one full orbit around our sun
which are then scaled
into readable numbers
. Time is
also measured by the speed of light
is a way of measuring biological decay
so that we can
measure how old something is
and estimate how
long our body will
and how much time we have left in our
. We can also
use time to estimate how long matter
and other molecules will last. Time
comes in handy. There's a Time and Place for
. Time waits for no one, and temporary
may be longer or shorter than you think. Time is of the
Time is an amount of successive moments
considered as a resource under your
sufficient enough to accomplish
An instance or single occasion for some event. A suitable
moment. Regulate or set the time of.
An indefinite period (usually marked by specific attributes or
of experience in which events pass from the future
through the present to the past.
A person's experience
on a particular occasion. A reading
of a point in time as given by a clock
The fourth coordinate that is required (along with
) to specify a physical event
as given by division into parts of equal duration. Measure
the time or duration of an event or action or the person
who performs an action in a certain period of time
. Assign a
time for an activity or event. Set the
, or execution of.
Adjust so that a force
is applied and an
occurs at the
is the time that has elapsed. Events which occurred before a given point in
. An earlier period in someone's life. History
is to be earlier in time or
to go back further or come before. To be the predecessor of something. To
move ahead of others in time or space. Predecessor is someone who precedes
you in time.
or coming before at an
. To go
back further in time
period of time
between the past and the future. Something
The time that is
associated with the events perceived directly and in the first time.
are events or states that have not yet happened.
or yet to be
. What will happen in the time after the present.
arrival is considered inevitable
due to the existence of time and the
laws of physics
Medium Future is
relating to a period of time that is neither very soon nor very far.
is usually above 3 years, with medium-term
usually between 1 and 3 years and
short-term usually under 1 year.
Timeline of some of the things that will happen in the Near Future
(wiki) - an
incomplete list that leaves lot of things out, no vision.
Timeline of the Far Future
(wiki) - an incomplete list that leaves a
lot of things out, no vision.
is the indefinite continued progress of existence and events
in the past, present, and future regarded as a whole. The
of time, typically as an old man with a scythe
is for a limitless time or a very
long or seemingly endless time
is time without end. A state of eternal existence believed
in some religions to characterize the
. A seemingly
endless time interval (waiting).Eternal
is continuing forever or indefinitely. Having no beginning and no end in
time. Lasting forever and existing at all times. Tiresomely long and
seemingly without end. Eternal can also mean
is something happening all the
time; seemingly without stopping.
is to move ahead
travel onward in time, space, place, position, or situation. To do
and showing no intention to stop. Exist over a
prolonged period of time
or to continue after an interruption.
. Detailed instructions in order to avoid
. The property of a
and connected period of
- Steady State
change in status or condition or place. Not capable of being reversed or
returned to the original condition.
is the property of being able to exist for an indefinite
duration. Lack of Chaos
(consistency) - Impermanence
is lasting for a long time or
longer than expected or usual. Lengthen in time; cause to be or last
cause something to last longer. Lengthen in time or the extend in duration
something for an unlimited or unspecified period of time. To an
extent or for an
decay or loss
is the tendency for a memory
or idea to persist or recur without any apparent stimulus for it. The
repetition of a particular response such as a word, phrase, or gesture
regardless of the absence or cessation of a
. The act of
persisting or persevering
; continuing or
is to continue
or to keep repeating something of
or nature. Being determined to do or
. Having firmness of purpose
. Determining is to establish
something after a calculation
in order to come to a
, shape, influence
or give direction to. Devoting your strength and
something important. Making up your mind about something and coming to terms.
Recurring - Repeating - Cycles
recurring at regular intervals
Recurring or reappearing
from time to time.
is something that happens
at regular time intervals or a definite length of time marked off by two
is an amount of time. The interval taken to
complete one cycle
regularly repeating phenomenon.
A unit of geological time during which a system of rocks formed.
The end or completion of something.
again and again.
is something occurring at
intervals three years apart.
is a flowering plant that takes
two years to complete its biological life cycle
, generally in a
temperate climate. In the first year, the plant undergoes primary growth,
in which its leaves, stems, and roots (vegetative structures) develop.
Usually, the stem of the plant remains short and the leaves are low to the
ground, forming a rosette. After the first year, the plant enters a period
for the colder months. Many
biennials require a cold treatment, or vernalization, before they will
flower. During the next spring or summer, the stem of the biennial plant
elongates greatly, or "bolts". The plant then flowers, producing fruits
and seeds before it finally dies. There are far fewer biennials than
either perennial plants or annual plants.
is a plant that
entire life cycle within a year
, and must be replanted
is following of
one thing after another
in time. The action of following in
. The gradual and
in an ecosystem brought about by the
replacement of one
community by another until a stable climax is established.
is things happening in regular succession without gaps.
the period of time
during which something continues. The property of
continuing in time. Cycles
is a very short
, as the time it takes the eye to blink or the heart to beat. A
Occurring with no delay.
is the amount by which
. Increase by some amount or by one. A process of
or longer or more numerous or more important.
definite length of time
marked off by two instants. Interval in music is the difference in
between two notes. Interval in
is set containing all points or all real
numbers between two given endpoints. Duration
is serving during an
intermediate interval of time. The time between one event, process, or
period and another.Intermediate
lying between two extremes in time, space or state.
is something occurring at
irregular intervals, not continuous
is something happening in the
near future.A Little While
that something will happen in a short time.
is an informal term for any unspecified short period of time
, as in "I
will be back in a jiffy
". From this it has acquired a number of
more precise applications for short, very short, extremely short, ultra
short or hyper short periods of time. First attested in 1785, the word's
origin is unclear, though one suggestion is that it was thieves' cant for
Once in a Blue Moon
is something that
happens very rarely. The phrase refers to the appearance of a second full
moon within a calendar month, which actually happens about every thirty-two months.
Critical Path Method
a set of project
activities. It is commonly used in conjunction with the program evaluation and review technique (PERT).
is something happening after
the fact and affecting things in the past or taking effect from a date in
the past. Descriptive of any event or stimulus or process that has an
effect on the effects of events or stimuli or process that occurred
previously. Ex post facto law
is to fix or adjust the time, amount, degree, or rate of. Shape or
influence; give direction to.
or governed according
to rule or principle or law
. Principles or usage.
Destiny - Fate
is an event or a course of events
that will inevitably happen
. Your overall
condition in life including everything that happens to you. Something's are not just random
events, something's could just be fate because
something's do happen for a reason
is the belief that
are destined to happen
in a particular and are
beyond a person's control
because they are determined by a supernatural power or intervention.
Sometimes bad things are
also destined to happen
, but you can still do something.
(pessimism) - Perception
is the belief that all events of history, past, present and future,
have been already decided
or are already known, by either God, fate, or some other force, including human
is something that is
in the future, something that is impossible to avoid or evade.
Inevitable is something incapable of being avoided or prevented. An
unavoidable event. Invariably occurring or appearing.
Meant to Be - Bebe
(youtube) - If it's meant to be, it'll be, it'll be, Baby, just
let it be.
in your life or in a project.
(child development) -
is an event that occurs at a critical time. A particular point in
events or time. A crisis situation
or point in time when a critical
must be made.
The shape or manner in which things come together and a
connection is made.
is the fact that all things are subject to
decline and destruction
permanence is mostly an illusion.
Temporal things, whether material or
mental, are compounded
objects in a continuous change
of condition. Though many things in life are in a cycle
of death and rebirth, many things eventually disintegrate or fade away,
but exactly where "away" is, is mostly undefined.
Conservation of Mass
are things that are
and of this world as opposed to the
is something that is intended to
be not permanent or not lasting. Lacking continuity or regularity.
is something lasting a very
is a Tibetan Buddhist tradition involving the creation and destruction of
made from coloured sand. A sand mandala is
ritualistically dismantled once it has been completed and its accompanying
and viewing are finished to
the Buddhist doctrinal
belief in the
of material life
Dust in the
Wind - Kansas
(youtube). The material world
over rated, living forever
Basic Units of Time - Time Language
is defined as 1⁄86,400 of a day – this factor derived from the
division of the day first into 24 hours, then to 60 minutes and finally to
60 seconds each. Another intuitive understanding is that it is about the
time between beats of a human heart
is a thousandth of a second. (0.001 or 10−3 or 1/1000).
100 milliseconds is one tenth of a second.
Units of Time
equal to one millionth of a second. Its symbol is μs.
(0.000001 or 10−6 or 1/1,000,000).
is an SI unit of time equal to 10−12 or 1/1,000,000,000,000
(one trillionth) of a second. That is one trillionth, or one millionth of
one millionth of a second, or 0.000 000 000 001 seconds. A picosecond is
to one second as one second is to approximately 31,689 years.
is a unit of time equal to 0.000 000 000 000 000 000 001
seconds, that is, 10−21 second, and with symbol zs.
A Zeptosecond stopwatch for the microcosm
recorded an internal atomic event with an accuracy of a trillionth of a
billionth of a second. Attoseconds
thousandths of a Femtosecond
, or quintillionths of a second.
. There are 86,400 Seconds in 1 day
There are 1,440 Minutes in 1 day
. There are
525,600 Minutes in 1 year
A second isn’t what you think
it is. Scientifically, it’s not defined as 1/60th of a minute,
“the duration of 9,192,631,770 periods of the radiation
corresponding to the transition between the
two hyperfine levels of the ground state of the caesium 133
is 60 Minutes
or 1/24 of a day or 24 hours in one earth day.
is equal to
or when earth
with respect to the
. There are 365 Days in a
when earth makes one full orbit
around the Sun.
Orders of MagnitudeYesterday
is the day immediately before today or the day preceding today. The
. Only a short time ago.
is the day that includes the
yesterday and tomorrow. The present time or age.
is the day after today. The next
day following the present day. The near future
There are 4 weeks in
. There are 12 months in 1 Year
Names of the days of the week origin and history
approximately 29.531 days
. A month is a unit of time used with
, which is approximately as long as
a natural period
related to the motion of the
; A month and Moon are
related and both derive from the same word in an ancestral language. The traditional concept arose with the cycle of
; such months or lunations are
synodic months and last approximately 29.531 days.
From excavated tally sticks, researchers have deduced that people
in relation to the Moon's phases as early as the
is the time between two successive syzygies or new moons or full
moons. The precise definition varies, especially for the beginning of the
month. Synodic Month
is based on the Moon's
orbital period with respect to the Earth-Sun line, and is still the
basis of many calendars
today, and are used to
divide the year. Synodic month is the average period of the Moon's orbit
with respect to the line joining the Sun and Earth. This is the period of
the lunar phases, because the Moon's appearance depends on the position of
the Moon with respect to the Sun as seen from the Earth.
is customary to specify
positions of celestial bodies with respect to the vernal equinox. Because
of Earth's precession of the equinoxes, this point moves back slowly along
the ecliptic. Therefore, it takes the Moon less time to return to an
ecliptic longitude of 0° than to the same point amid the fixed stars:
27.321582 days (27 d 7 h 43 min 4.7 s). This slightly shorter period is
known as the tropical month; compare the analogous tropical year.
is the Moon's orbit
approximates an ellipse rather than a circle. However, the orientation (as
well as the shape) of this orbit is not fixed. In particular, the position
of the extreme points (the line of the apsides: perigee and apogee),
rotates once (apsidal precession) in about 3,233 days (8.85 years). It
takes the Moon longer to return to the same apsis because it has moved
ahead during one revolution. This longer period is called the
and has an average length
of 27.554551 days (27 d 13 h 18 min 33.2 s). The apparent diameter of the
Moon varies with this period, so this type has some relevance for the
prediction of eclipses (see Saros), whose extent, duration, and appearance
(whether total or annular) depend on the exact apparent diameter of the
Moon. The apparent diameter of the full moon varies with the full moon
cycle, which is the beat period of the synodic and anomalistic month, as
well as the period after which the apsides point to the Sun again.
is the period of the Moon's
orbit as defined with respect to the celestial sphere of apparently fixed
stars. Sun Dial
the orbital period
of the Earth
moving in its orbit around the
. Due to the Earth's axial tilt, the
course of a year sees the passing of the
, marked by change in weather, the hours of daylight, and,
consequently, vegetation and soil fertility. For the Gregorian calendar,
the average length of the calendar year (the mean year) across the
complete leap cycle of 400 years is 365.2425 days
is the period of one complete
around the ecliptic
is about 5.9 trillion miles
is a time interval of exactly 365.25 Earth days.
is a timekeeping system that astronomers use to
. Using sidereal time, it is possible to easily point a
telescope to the proper coordinates in the night sky. Briefly, sidereal
time is a "time scale that is based on Earth's rate of rotation measured
relative to the fixed stars that are light years away".
long period of time.
Timeline of Earth History
(our moment in the sun)
Orders of Magnitude in Reference to Time
is a description of the quantity of a time
in respect to comparison between differing magnitudes. In common usage,
the scale is usually the base10 or base−10 exponent being applied to an
amount, making the order of magnitude 10 times greater or smaller. As the
differences are measured in factors of 10, a logarithmic scale is applied.
In terms of time, the relationship between the smallest limit of time, the
Planck time, and the next order of magnitude larger is 10.
Primacy of Consciousness
constitute a day and night of Brahma, 8.64 billion human years.
Hindu Units of
Real Time Monitoring
86,400 seconds in a day. (1+8=9) - 10,080 Minutes in a Day (1+8=9) - 525,600 Minutes in a Year.
1,000 seconds is about 16 minutes. - A million seconds is about 11 days. - A billion seconds is about 32 years.
was a range of eschatological beliefs that
cataclysmic or otherwise transformative events would occur on or around 21 December 2012.
Clocks - Time Measuring - What Time is it
is an instrument
to indicate time, keep time, and
device for measuring
time and displaying the time.
is a time convention in which the 24 hours of the day
are divided into two periods: a.m. before midday, and p.m. or after
midday. Each period consists of 12 hours numbered: 12 (acting as 0), 1, 2,
3, 4, 5, 6, 7, 8, 9, 10 and 11. The 24-hour/day cycle starts at 12
midnight (usually indicated as 12:00 a.m.), runs through 12 noon (usually
indicated as 12:00 p.m.), and continues just before midnight at the end of
the day. The 12-hour clock was first used from the middle of the second
millennium BC and reached its modern form in the 16th century AD.
or military time, is the convention of timekeeping in
which the day runs from midnight to midnight and is divided into 24 hours.
This is indicated by the hours passed since midnight, from 0 to 23. This
system is the most commonly used time notation in the world today, and is
used by the international standard ISO 8601.
is a type of striking clock featuring
Clocks like these were built from the 1st century BC through to Victorian
times in Europe. A Cuckoo clock is a simple form of this type of clock.
The first known mention is of those created by the Roman engineer
Vitruvius, describing early alarm clocks working with gongs or trumpets.
Later automatons usually perform on the hour, half-hour or quarter-hour,
usually to strike bells. Common figures in older clocks include Death (as
a reference to human mortality), Old Father Time, saints and angels. In
the Regency and Victorian eras, common figures also included royalty,
famous composers or industrialists.
is a watch that uses a clockwork mechanism to measure
the passage of time, as opposed to quartz watches which function
electronically via a small battery. A mechanical watch is driven by a
mainspring which must be hand-wound periodically. Its force is transmitted
through a series of gears to power the balance wheel, a weighted wheel
which oscillates back and forth at a constant rate. A device called an
escapement releases the watch's wheels to move forward a small amount with
each swing of the balance wheel, moving the watch's hands forward at a
constant rate. The escapement is what makes the 'ticking' sound which is
heard in an operating mechanical watch. Mechanical watches evolved in
Europe in the 17th century from spring powered clocks, which appeared in
the 15th century. Mechanical watches are typically not as accurate as
modern electronic quartz watches, and they require periodic cleaning by a
skilled watchmaker. Since the 1970s, quartz watches have taken over most
of the watch market, and mechanical watches are now mostly a high-end
product, purchased for aesthetic reasons, for appreciation of their fine
craftsmanship, or as a status symbol.
refers to the inner workings of either mechanical machines
called clocks (where it is also called the movement) or other mechanisms
that work similarly, using a complex series of gears. A clockwork
mechanism is often powered by a clockwork motor consisting of a
mainspring, a spiral torsion spring of metal ribbon. Energy is stored in
the mainspring manually by winding it up, turning a key attached to a
ratchet which twists the mainspring tighter. Then the force of the
mainspring turns the clockwork gears, until the stored energy is used up.
The adjectives wind-up and spring-powered refer to mainspring-powered
clockwork devices, which include clocks and watches, kitchen timers, music
boxes, and wind-up toys.
in clockwork also known as a caliber, is the mechanism of a
watch or timepiece, as opposed to the case, which encloses and protects
the movement, and the face, which displays the time. The term originated
with mechanical timepieces, whose clockwork movements are made of many
moving parts. It is less frequently applied to modern electronic or quartz
timepieces, where the word module is often used instead.
is the study of the measurement of time. Clocks, watches, clockwork,
sundials, hourglasses, clepsydras, timers, time recorders, marine
chronometers, and atomic clocks are all examples of instruments used to
measure time. In current usage, horology refers mainly to the study of
mechanical time-keeping devices, while chronometry more broadly includes
electronic devices that have largely supplanted mechanical clocks for the
best accuracy and precision in time-keeping. People interested in horology
are called horologists. That term is used both by people who deal
professionally with timekeeping apparatus (watchmakers, clockmakers), as
well as aficionados and scholars of horology. Horology and horologists
have numerous organizations, both professional associations and more
scholarly societies. The largest horological membership organisation
globally is the NAWCC, the National Association of Watch and Clock
Collectors, which is USA based, but also has local chapters elsewhere.
is defined by its
measurement: time is what a clock reads
classical, non-relativistic physics, it is a scalar quantity (often
denoted by the symbol t and, like length, mass, and charge, is usually
described as a fundamental quantity. Time can be combined mathematically
with other physical quantities to derive other concepts such as motion,
kinetic energy and time-dependent fields.
is a complex of technological and scientific issues, and
part of the foundation of
. Before there were clocks, time was measured by those
physical processes which were understandable to each epoch of
civilization: The first appearance of Sirius to mark the flooding of the
Nile each year. The periodic succession of night and day, seemingly
eternally. The position on the horizon of the first appearance of the sun
at dawn. The position of the sun in the sky. The marking of the moment of
noontime during the day. The length of the shadow cast by a gnomon.
Eventually, it became possible to characterize the passage of time with
instrumentation, using operational definitions. Simultaneously, our
conception of time has evolved.
is typically a pendulum-regulated clock that strikes the
hours with a sound like a common cuckoo's call and has an automated cuckoo
bird that moves with each note. Some move their wings and open/close their
beaks while leaning forward, whereas in others, only the bird's body leans
forward. The mechanism to produce the cuckoo call has been in use since
the middle of the 18th century and has remained almost without variation
until the present.
is a type of clock that displays the time digitally
(i.e. in numerals or other symbols), as opposed to an analogue clock,
where the time is indicated by the positions of rotating hands. Digital
clocks are often associated with electronic drives, but the "digital"
description refers only to the display, not to the drive mechanism. (Both
analogue and digital clocks can be driven either mechanically or
electronically, but "clockwork" mechanisms with digital displays are
rare). A digital watch keeps time using a
. A tiny piece of quartz crystal is cut into the shape
of a tuning fork, which vibrates at 32,768 times per second when
electricity from the watch battery is passed through it. A circuit in the
watch then counts 1 second for every 32,768 vibrations. Digital clocks
typically use the 50 or 65 hertz oscillation of AC power or a 32,768 hertz
crystal oscillator as in a quartz clock to keep time. Most digital clocks
display the hour of the day in 24-hour format; in the United States and a
few other countries, a commonly used hour sequence option is 12-hour
format (with some indication of AM or PM). Some timepieces, such as many
digital watches, can be switched between 12-hour and 24-hour modes.
Emulations of analog-style faces often use an LCD screen, and these are
also sometimes described as "digital".
is a clock that uses an electronic oscillator that is
regulated by a quartz crystal to keep time. This crystal oscillator
creates a signal with very precise frequency, so that quartz clocks are at
least an order of magnitude more accurate than mechanical clocks.
Generally, some form of digital logic counts the cycles of this signal and
provides a numeric time display, usually in units of hours, minutes, and
seconds. The world's first quartz clock was built in 1927 by Warren
Marrison and J. W. Horton at Bell Telephone Laboratories. The world's
first quartz watch, however, was unveiled by Japanese watchmaker Seiko as
the Astron in December 1969. Since the 1980s, when the advent of
solid-state digital electronics allowed them to be made compact and
inexpensive, quartz timekeepers have become the world's most widely used
timekeeping technology, used in most clocks and watches as well as
computers and other appliances that keep time.
that produces a periodic
, oscillating electronic
signal, often a sine wave or a square wave. Oscillators convert direct
current (DC) from a power supply to an alternating current (AC) signal.
They are widely used in many electronic devices ranging from simplest
clock generators to digital instruments (like calculators) and complex
computers and peripherals etc. Common examples of signals generated by
oscillators include signals broadcast by radio and television
transmitters, clock signals that regulate computers and quartz clocks, and
the sounds produced by electronic beepers and video games.
is a device that records start and end times for hourly
employees at a place of business.
is the synchronization of clocks within a
geographical area or region to a single time standard, rather than using
solar time or a locally chosen meridian (longitude) to establish a local
mean time standard.
is a region of the globe
that observes a uniform standard time
for legal, commercial, and social purposes. Time zones tend to follow the
boundaries of countries and their subdivisions because it is convenient
for areas in close commercial or other communication to
keep the same
On December 31, 2016, a "leap
" will be added to the world's clocks at 23 hours, 59 minutes
and 59 seconds.
Can you really
Turn Back Time?
Daylight Saving Time
is the practice of advancing clocks during summer
months so that evening daylight lasts longer, while sacrificing normal
sunrise times. Typically, regions that use daylight saving time adjust
clocks forward one hour close to the start of spring and adjust them
backward in the autumn. In effect, DST causes a lost hour of
in the spring and an extra hour of sleep
in the fall.
AAA reports that Car Crashes rise 159 percent after Daylight Saving Time
that Car Crashes rise 159 percent after Daylight Saving Time ends.
Studies show that there is an increase in both heart attacks and
road accidents the days after clocks are set forward one hour in
hour of sleep disrupts the Body Clock
. Being tired can
decrease productivity, concentration and general well-being.
Children may feel tired and cranky for several days after an
hour's change in their bedtime routines. There doesn't seem to
be any health benefits to daylight savings time, so what do we
need it for? And do the reasons out weigh the adverse effects.
Daylight Saving Time was instituted by
, not farmers. The US first enacted Daylight
Saving Time during World War I, ostensibly to conserve energy by cutting
down on the time people would artificially light their homes. Back when
daylight saving was first enacted, “golf ball sales skyrocketed and there
was a $200 million in additional sales of golf clubs and greens fees.
Petroleum lobby was a keen supporter, because it has known since 1930 that
daylight saving makes people drive their cars more in the evening—so they
use more gasoline. The candy lobby was convinced an extra hour of evening
light on Halloween would make kids collect more candy, and in turn get
adults to buy more of it in anticipation.
A Norwegian island is
campaigning to get rid of the concept of time
, allowing residents to do
“what we want, when we want”. The sun doesn’t rise in winter or set in
, leading most of the island’s 300 residents to back a bid for
it to become the world’s first time-free zone. Kjell Ove Hveding, leader
of the Time-Free Zone campaign, said the aim is to provide flexibility.
Coordinated Universal Time
is the primary
standard by which the world regulates clocks
and time. It is within about 1 second of mean solar time at 0° longitude,
and is not adjusted for daylight saving time. In some countries where
English is spoken, the term
Greenwich Mean Time
(GMT) is often used as a synonym for
a specification for measuring time: either the rate at which time passes;
or points in time; or both. In modern times, several time specifications
have been officially recognized as standards, where formerly they were
matters of custom and practice. An example of a kind of time standard can
be a time scale, specifying a method for measuring divisions of time. A
standard for civil time can specify both time intervals and time-of-day.
Standardized time measurements are made using a clock to count periods of
some period changes, which may be either the changes of a natural
phenomenon or of an artificial machine.
is a clock device that uses an electronic transition
frequency in the microwave, optical, or ultraviolet region of the
electromagnetic spectrum of atoms as a frequency standard for its timekeeping element.
Atomic clock ticks about a quadrillion times per
or 10 to the 15th.
Beat the Clock
is a television game show that involves people trying
to complete challenges to win prizes while faced with a time limit.
is a limit of time within
which something must be done. A time limit or deadline is a narrow field
of time, or a particular point in time, by which an objective or task must
be accomplished. Once that time has passed, the item may be considered
overdue (e.g., for work projects or school assignments).
device used to measure the passage of time
. It comprises two glass bulbs
connected vertically by a narrow neck that allows a regulated trickle of
material (historically sand
) from the upper
bulb to the lower one. Factors affecting the time interval measured
include sand quantity, sand coarseness, bulb size, and neck width.
Hourglasses may be reused indefinitely by inverting the bulbs once the
upper bulb is empty. Depictions of hourglasses in art survive in large
numbers from antiquity to the present day, as a
symbol for the passage of time.
is a sequence of backward counting
to indicate the time remaining before an event is scheduled to occur.
is a specialized type of clock
measuring specific time intervals. Timers can be categorized into two main
types. A timer which counts upwards from zero for measuring elapsed time
is often called a stopwatch, while a device which counts down from a
specified time interval is more usually called a timer. A simple example
of this type is an hourglass. Working method timers have two main groups:
Hardware and Software timers. Most timers give an indication that the time
interval that had been set has expired. Time switches, timing mechanisms
which activate a switch, are sometimes also called "timers". Equation
describes the discrepancy between two kinds of
word equation is used in the medieval sense of "reconcile a difference".
The two times that differ are the apparent solar time, which directly
tracks the diurnal motion of the sun
, and mean solar time, which tracks a
theoretical mean Sun with noons 24 hours apart. Apparent solar time can be
obtained by measurement of the current position (hour angle) of the Sun,
as indicated (with limited accuracy) by a sundial. Mean solar time, for
the same place, would be the time indicated by a steady clock set so that
over the year its differences from apparent solar time would resolve to
zero. The equation of time is the east or west component of the analemma,
a curve representing the angular offset of the Sun from its mean position
on the celestial sphere as viewed from Earth. The equation of time values
for each day of the year, compiled by astronomical observatories, were
widely listed in almanacs and
History of Timekeeping Devices
was an ancient timekeeping instrument. It involved the use of a bar with a
plumb line, attached to a wooden handle. It was used to track the
alignment of certain stars
which are known as Decans or "Baktiu" in the Ancient Egyptian Language, if
they were visible, in order to approximate the time at night (10 stars for
the 10 hours of the night, with a total of 24 hours including 12 hours for
the day, 1 hour for sunset, 1 hour for sunrise). In this way, it was more
efficient than other contemporary devices, such as
, which were rendered useless at night
when it's dark
. The exact design of the merkhet consists of a
horizontal bar, usually carved from wood or bone, with a plumb line
hanging from a transverse hole at one raised end of the bar, attached to a
controlling wooden handle. As deduced by texts and engravings on the inner
walls of the temples of Dendera and Edfu, the merkhet was typically used
in conjunction with a corresponding sighting tool, which the Egyptians
called a bay, itself made from a specially cut palm-rib with a sliced "V"
shape at one end. The two together could also be used, as appropriate, to
determine North. For the operation to work, two merkhets were required,
one aligned with Polaris, the North Pole star. If erected properly, and if
a bay was on hand, one could estimate quite accurately the time by
observing the transits of certain stars as they crossed the meridian and
came into alignment with the two merkhets.
is a system
of organizing days
religious, commercial or administrative purposes. This is done by giving
names to periods of time
, typically days,
, months, and years. A date
is the designation of a single, specific day within such a system. A
calendar is also a physical record (often paper) of such a system. A
calendar can also mean a list of planned events, such as a
or a partly or fully chronological list of documents,
such as a calendar of wills. Periods in a calendar (such as years and
months) are usually, though not necessarily, synchronized with the
of the sun or the moon
. The most common type of pre-modern calendar was
, a lunar calendar
that occasionally adds one
intercalary month to remain synchronised with the
over the long
History of Calendars
. The calendar in most widespread use
today is the
, introduced in the 16th century by Pope Gregory
XIII as a modification of the
, which was itself a modification of the ancient Roman
calendar. The term calendar itself is taken from calendae, the term for
the first day of the month in the
, related to the verb calare "to call out", referring to
the "calling" of the new moon
when it was first seen. Latin calendarium
meant "account book, register" (as accounts were settled and debts were
collected on the calends of each month). The Latin term was adopted in Old
French as calendier and from there in Middle English as calendery the
13th century (the spelling calendar is early modern).by the
13th century (the spelling calendar is early modern).
a reference to a particular day represented within a calendar system. The
calendar date allows the specific day to be identified.
The number of days
between two dates may be calculated
. For example, "24 September 2019" is
ten days after "14 September 2019" in the Gregorian calendar. The date of
a particular event depends on the observed time zone. For example, the air
attack on Pearl Harbor that began at 7:48 a.m. Hawaiian time on 7 December
1941 took place at 3:18 a.m. Japan Standard Time, 8 December in Japan. A
particular day may be represented by a different date in another calendar
as in the Gregorian calendar and the Julian calendar, which have been used
simultaneously in different places. In most calendar systems, the date
consists of three parts: the day of the month, the month, and the year.
There may also be additional parts, such as the day of the week. Years are
usually counted from a particular starting point, usually called the
epoch, with era referring to the particular period of time (note the
different use of the terms in geology). The most widely used epoch is a
conventional birthdate of Jesus (which was established by Dionysius Exiguus in the sixth century). A date without the year may also be
referred to as a date or calendar date (such as "2 September" rather than
"2 September 2019"). As such, it defines the day of an annual event, such
as a birthday on 31 May, holiday on 1 September, or Christmas on 25
December. Many computer systems internally store points in time in Unix
time format or some other system time format. The date (Unix)
command—internally using the C date and time functions—can be used to
convert that internal representation of a point in time to most of the
date representations shown here. The current date in the Gregorian
calendar is 2 September 2019. If this is not really the current date, then
click here to update it.
containing one additional day (or, in the case of
lunisolar calendars, a month) added to keep the calendar year synchronized
with the astronomical or seasonal year. Because seasons and astronomical
events do not repeat in a whole number of days, calendars that have the
same number of days in each year drift over time with respect to the event
that the year is supposed to track. By inserting (also called
intercalating) an additional day or month into the year, the drift can be
corrected. A year that is not a leap year is called a common year.
device that tells the time of day
when there is sunlight by the apparent
position of the
in the sky. In the narrowest sense of the word, it
consists of a flat plate (the dial) and a gnomon, which
shadow onto the dial
. As the Sun appears to move across the sky, the shadow
aligns with different hour-lines, which are marked on the dial to indicate
the time of day. The style is the time-telling edge of the gnomon, though
a single point or nodus may be used. The gnomon casts a broad shadow; the
shadow of the style shows the time. The gnomon may be a rod, wire, or
elaborately decorated metal casting. The style must be parallel to the
axis of the Earth's rotation for the sundial to be accurate throughout the
year. The style's angle from horizontal is equal to the sundial's
. In a broader sense, a sundial is any device that
uses the Sun's altitude or azimuth (or both) to show the time. In addition
to their time-telling function, sundials are valued as decorative objects,
literary metaphors, and objects of mathematical study. It is common for
inexpensive, mass-produced decorative sundials to have incorrectly aligned
gnomons and hour-lines, which cannot be adjusted to tell correct time.
is a calculation of the passage of time
based on the
position of the Sun in the sky
. The fundamental unit of solar time is the
. Two types of solar time are apparent solar time
or sundial time, and mean solar time or clock time
A sidereal day is the time it takes for a planet to complete a single
rotation on its axis. A solar day is the time it takes for the Sun to
return to the same place in the sky.
is where the sun is perceived to be directly overhead
Where the sun's rays are hitting the planet exactly perpendicular
to its surface. It can also mean the point closest to the sun on an object
in space, even though the sun might not be visible.
is a tropical solar phenomenon when the Sun culminates at
the zenith at solar noon, passing directly overhead (above the subsolar
is a clock
mechanisms and dials to display
, such as the relative positions of the
, and sometimes major planets. The term is
loosely used to refer to any clock that shows, in addition to the time of
day, astronomical information
. This could include the location of the
in the sky, the age and Lunar phases, the position of the sun on
the ecliptic and the current zodiac sign, the sidereal time, and other
astronomical data such as the moon's nodes (for indicating eclipses) or a
rotating star map. The term should not be confused with astronomical
regulator, a high precision but otherwise ordinary pendulum clock used in
observatories. Astronomical clocks usually represent the solar system
using the geocentric model. The center of the dial is often marked with a
disc or sphere representing the earth, located at the center of the solar
system. The sun is often represented by a golden sphere (as it initially
appeared in the Antikythera Mechanism
back in the 2nd century BC), shown rotating around the earth once a day
around a 24-hour analog dial. This view accorded both with the daily
experience and with the philosophical world view of pre-Copernican Europe.
Prague Astronomical Clock
is the moment when the upper rim of the Sun appears on the horizon in the
morning. The term can also refer to the entire process of the solar disk
crossing the horizon and its accompanying atmospheric effects.
is the illumination of the lower atmosphere when the Sun is not directly
visible because it is below the horizon. The lower the Sun is beneath the
horizon, the dimmer the twilight (other factors such as atmospheric
conditions being equal). When the Sun reaches 18° below the horizon, the
twilight's brightness is nearly zero, and evening twilight becomes
nighttime. When the Sun again reaches 18° below the horizon, nighttime
becomes morning twilight. Owing to its distinctive quality, primarily the
absence of shadows and the appearance of objects silhouetted against the
lit sky, twilight has long been popular with photographers and painters,
who often refer to it as the blue hour, after the French expression
the time that marks the beginning of twilight before sunrise. It is
recognized by the appearance of indirect sunlight being scattered in
Earth's atmosphere, when the centre of the Sun's disc has reached 18°
below the observer's horizon. This morning twilight period will last until
sunrise (when the Sun's upper limb breaks the horizon), when direct
sunlight outshines the diffused light.
Darkest before Dawn
or sundown, is the daily disappearance of the Sun below the horizon due to
Earth's rotation. As viewed from everywhere on Earth (except the North and
South poles), the equinox Sun sets due west at the moment of both the
Spring and Autumn equinox. As viewed from the Northern Hemisphere, the sun
sets to the northwest (or not at all) in the Northern hemisphere's spring
and summer, and to the southwest in the autumn and winter; these seasons
are reversed for the Southern Hemisphere.
occurs at the darkest stage of twilight, or at the very end of
astronomical twilight after sunset and just before night. At predusk,
during early to intermediate stages of twilight, enough light in the sky
under clear conditions may occur to read outdoors without artificial
illumination; however, at the end of civil twilight (when Earth rotates to
a point at which the center of the Sun's disk is 6° below the local
horizon), such lighting is required to read outside. The term dusk usually
refers to astronomical dusk, or the darkest part of twilight before night
Time Lapse - Frame Rate Frequency
is a technique whereby the frequency at which
are captured is much lower than that used to view the
sequence. When played at normal speed, time appears to be moving faster
and thus lapsing.
Flowers Time Lapse
Our Forests |
Timelapse in Google Earth
Epic Timelapse (by
Akash Wadhwani) 4K
is a technique in time-lapse photography that allows the
to create motion shots. In
its simplest form, a hyperlapse is achieved by manually moving the camera
a short distance between each shot.Lapse
is a break or intermission in the occurrence of something.
is an editing technique where each pixel row is delayed
one frame more than the row below it.
is an effect in film-making
whereby time appears to be slowed
Water in Slow
Water In Slow
is the process of recording the movement of objects or
is to move forward through a recording at a
than that at which it would usually be played.
Move forward in time
at a faster than normal rate, e.g. to skip
quickly to a later point when viewing or listening to a recording. Shift
attention or focus to a later point in time.
In Real Time
is something that happens at
the present time and at normal speed. Something displayed nearly
simultaneously when it is occurring. A live broadcast at the moment you
are watching it. Literary Time
- Flash Back
is an intentional delay when broadcasting live
material. Such a delay may be as short as seven
to prevent mistakes or
from being broadcast. Longer delays lasting
can also be introduced so
that the material is aired at a later scheduled time such as the prime
time hours to maximize viewership. Tape delays lasting several hours can
also be edited down to remove filler material or to trim a broadcast to
the network's desired run time for a broadcast slot, but this isn't always
Sound Recording and Reproduction
is an electrical, mechanical,
electronic, or digital inscription and re-creation of sound waves, such as
spoken voice, singing, instrumental music, or sound effects. The two main
classes of sound recording technology are analog recording and digital
is turning in
the opposite direction or going back in time.
is a video reproduction of something that recently
occurred which was both shot and broadcast live. The video, having already
been shown live, is replayed in order for viewers to see again and analyze
what had just taken place. Sometimes it's a slow motion replay so that it
can be more accurately analyzed so that rulings can be reviewed by
officials or challenged by coaches. Time Travel
is the science of taking
of very fast.
is a device capable of capturing
with exposures of less
than 1/1,000 second or frame rates in excess of 250
frames per second
High-Speed 'Electron Camera' films Molecular Movie in HD
High-Speed Surveillance in Solar Cells catches recombination red-handed
Using synchronized lasers pulses, researchers developed a new method of
electrostatic force microscopy
record movies with frames as fast as 300 nanoseconds. This is fast enough
to watch electrons move inside solar cells, which can lead to more
efficient solar power devices.
T-CUP is the world's Fastest Camera, capable of capturing 10 trillion
Frames Per Second
. Compressed ultrafast photography system using
ultra-short pulses in the femtosecond range (10-15 s), combined with the
image acquired it uses the
Femtosecond streak camera
, which is far too short to visualize, but it
makes it possible to freeze time and create extremely slow motion images.
is an instrument for measuring the variation in a pulse
of light's intensity with time. They are used to measure the pulse
duration of some ultrafast laser systems
and for applications such as
. At 70 trillion frames per
, it's fast enough to document nuclear fusion and radioactive
molecule decay. Wang's technique, which he calls compressed ultrafast
spectral photography (CUSP), uses short pulses of laser light that each
last for just one femtosecond, or one quadrillionth of a second. It's
easiest to think of the advanced process in two steps: imaging and
Ultrafast camera films 3-D movies at 100 billion frames per second
his quest to bring ever-faster cameras to the world, Caltech's Lihong Wang
has developed technology that can reach blistering speeds of 70 trillion
frames per second, fast enough to see light travel. Just like the camera
in your cell phone, though, it can only produce flat images.
Studying chaos with one of the world's fastest cameras
camera technology might aid in the study of unpredictable systems. The
camera makes use of a technology called compressed ultrafast photography.
photography is when several
are captured in
by either pressing the shutter button or holding it down.
Watching a video
or 2X Speed
, is sometimes more effective for learning than watching it at
normal playback speed. Information can be delivered a lot slower than
we are capable of processing it, by speeding videos up you will consume
more information, remember it better, and be less bored, and save time.
TED Video Option
is a video at normal speed.
would play a video twice as
quickly. Lawn Mower
Most of us speak
at the rate of about
125 words per
. However, we have the mental capacity to understand someone
speaking at 400 words per minute, if that were possible.
typically refers to the frequency at which the clock generator of
can generate pulses,
which are used to synchronize the operations of its components, and is
used as an indicator of the processor's speed.
Space Time - Time and Space
is any mathematical model that combines space
, which is involving gradual
without abrupt changes or discontinuities.
Spacetime is any mathematical model which fuses the
three dimensions of space
and the one
dimension of time into a single four-dimensional manifold
diagrams can be used to visualize relativistic effects
, such as why
different observers perceive differently
where and when events occur. In
ordinary space, a position is specified by three numbers, known as
dimensions. In the Cartesian coordinate
, these are called x, y, and z. A position in spacetime is
called an event, and requires four numbers to be specified: the
three-dimensional location in space, plus the position in time. An event
is represented by a set of coordinates x, y, z and t. Space time is thus
four dimensional. Mathematical events have zero duration and represent a
single point in spacetime. The path of a particle through spacetime can be
considered to be a succession of events
The series of events can be linked together to form a line which
represents a particle's progress through spacetime. That line is called
the particle's world line. Mathematically, spacetime is a manifold, which
is to say, it appears locally "flat
" near each point in the same way that,
at small enough scales
globe appears flat
is a graphical illustration of the properties of
in the special theory of relativity. Spacetime diagrams allow a
qualitative understanding of the corresponding phenomena like time
dilation and length contraction without mathematical equations.
is a way of
representing space and time using numbers to represent points. We assign a
set of three numbers, (x,y,z), to characterize points in space, and one
number, t, to characterize a point in time. Combining these, we have
general space-time coordinates: (x,y,z,t).
is a mathematical model that
joins space and time into a single idea called a continuum. This
four-dimensional continuum is known as
space, which is a four-dimensional
: three dimensions of space (x, y, z) and one dimension of time.
as a measurement explains variation as
involving gradual quantitative transitions
without abrupt changes or
. In contrast, categorical theories or models explain
variation using qualitatively different states.
or extent or succession in which no part or portion is distinct or
distinguishable from adjacent parts.
is something continuing in time
or space without
interruption. A function or curve that is extending without
is to move ahead and travel onward in time or space.
Something remaining in force or being carried on without letup. To
continue a certain state, condition, or activity. To keep or
something in unaltered
condition and cause to remain
is a structure periodic in time and
space. It extends the idea of a crystal to
. Analogues of the space-time crystal have been made
that are in a non-equilibrium state that needs an external drive to repeat
in time.Loop Quantum Gravity
are features of spacetime that can be described as
exhibiting some form of symmetry
. The role of symmetry in physics is
important in simplifying solutions to many problems. Spacetime symmetries
are used in the study of exact solutions of Einstein's field equations of
or space–time compression or time–space
distanciation, is a Marxist idea referring to the altering of the
qualities of space–time and the relationship between space and time that
is a consequence of the expansion of capital. Time Lapse
Theory of Relativity
usually encompasses two interrelated theories by
Albert Einstein, special relativity and general relativity. Special
relativity applies to all physical phenomena in the
absence of gravity
. General relativity
explains the law of gravitation
relation to other forces of nature. It applies to the cosmological and
astrophysical realm, including astronomy.
is the geometric theory of
published by Albert Einstein
in 1915 and the current description of gravitation in modern physics.
General relativity generalizes special relativity and refines Newton's law
of universal gravitation, providing a unified description of gravity as a
geometric property of space and time, or spacetime
. In particular, the
curvature of spacetime is directly related to the energy and momentum of
whatever matter and radiation are present. The relation is specified by
the Einstein field equations, a system of partial differential equations.
General Relativity for Babies
- Board book – May 2, 2017 by Author
General Relativity for Babies Book Read Aloud
describes how time and space are not absolute concepts
. Time or light is
depending on the
speed of the observer
. Time dilates, or slows down, the faster a
person is moving in any direction.
Time is flexible depending on your speed
If you are moving extremely fast, time will become slower, but to you
everything will seem to be normal.
If the Sun turned off
, people on earth would
know in 8 minutes, but if someone was on Pluto, they will not know that
the sun turned off for 5 hours. We should not limit ourselves to only
seeing things from the
. From other perspectives outside the human experience,
there can be several ways at looking at something and several ways of
understanding something. There are
known differences between
, and everyone sees things a little different. But we can
not assume that humans are the only ones who can see. So we should
classify things that are known to be relative between humans, and we
should also classify things that are not known, things that are from a
non-human perspective. Special
Relativity is the generally accepted and experimentally well-confirmed
physical theory regarding the relationship between space and time. In
Albert Einstein's original pedagogical treatment, it is based on two
postulates: The laws of physics are invariant (i.e., identical) in all
inertial systems (i.e., non-accelerating frames of reference).
of light in a vacuum is the same for all observers who are in the vacuum
regardless of the motion of the light source.
(youtube) - Imagine two observers, one seated in the center of a
speeding train car, and another standing on the platform as the train
Simultaneity - Albert Einstein and the Theory of Relativity
- Observers in relative motion experience time differently.
Relative Motion and
Inertial Reference Frames
to Relative motion!
(youtube)Standing on edge of black
hole would cause 700 years to pass in 1 minute
. If you were to
stand just outside the event horizon of Sagittarius A, and you stood there
for one minute, 700 years would pass because time passes so much slower in
the gravitational field there than it does on Earth. As you get closer to
a black hole
, the flow of time slows down, compared to flow of time far
from the hole. 1 hour for the observer will be 100,000,000 years for a
person on earth. Some have suggested that black holes could be used for
- Quantum Mechanics
- Time Travel
Astronauts on the
International Space Station, that means they get to
age just a tiny bit
than people on Earth. That's because of
or Space-time Bridge
, is a shortcut connecting two separate points in spacetime.
Atomic clocks measure Einstein's general relativity
. At millimeter
scale or at the smallest scale ever, the effect called
shows that two tiny atomic clocks, separated by just a
millimeter or the width of a sharp pencil tip, tick at different rates.
Relativity of Simultaneity
is the concept that distant simultaneity,
whether two spatially separated events occur at the same time, is not
absolute, but depends on the observer's
. Everything is
"Time is parallel. It's not linear, time is side-by-side, which
means everything in the past and the future is existing in this moment but
within different frequencies."
or Galilean Relativity
states that the laws of
motion are the same in all inertial frames. Galileo Galilei first
described this principle in 1632 in his Dialogue Concerning the Two Chief
World Systems using the example of a ship travelling at constant velocity,
without rocking, on a smooth sea; any observer below the deck would not be
able to tell whether the ship was moving or stationary.
Principle of Relativity
is the requirement that the equations
describing the laws of physics have the same form in all admissible frames
of reference. For example, in the framework of special relativity the
Maxwell equations have the same form in all inertial frames of reference.
In the framework of general relativity the Maxwell equations or the
Einstein field equations have the same form in arbitrary frames of
reference. Several principles of relativity have been successfully applied
throughout science, whether implicitly (as in Newtonian mechanics) or
explicitly (as in Albert Einstein's special relativity and general
refers to mechanics compatible with special
relativity (SR) and general relativity (GR). It provides a non-quantum
mechanical description of a system of particles, or of a fluid, in cases
where the velocities of moving objects are comparable to the speed of
light c. As a result, classical mechanics is extended correctly to
particles traveling at high velocities and energies, and provides a
consistent inclusion of electromagnetism with the mechanics of particles.
This was not possible in Galilean relativity, where it would be permitted
for particles and light to travel at any speed, including faster than
light. The foundations of relativistic mechanics are the postulates of
special relativity and general relativity. The unification of SR with
quantum mechanics is relativistic quantum mechanics, while attempts for
that of GR is quantum gravity, an unsolved problem in physics. As with
classical mechanics, the subject can be divided into "kinematics"; the
description of motion by specifying positions, velocities and
accelerations, and "dynamics"; a full description by considering energies,
momenta, and angular momenta and their conservation laws, and forces
acting on particles or exerted by particles. There is however a subtlety;
what appears to be "moving" and what is "at rest"—which is termed by
"statics" in classical mechanics—depends on the relative motion of
observers who measure in frames of reference.
The Speed of Light
is a constant in our Universe. Though time in motion slows down
time and strong gravity slows down time, light is mostly a constant, as
far as we can see of course. Light Clock
is about 5.9 trillion miles, which is the distance that
light travels in a
, which is one Julian year or 365.25 days. What does a day mean to
someone who never lived on Earth? What is a year? What is a mile? What is
reality? You could being a one foot ruler and say light travels
983,571,056.4304 feet per second (9.836e+8). Then they would say, what is
a million and what is a second? Voyager One
Space and Time
is a concept in physics and philosophy about the
properties of the universe. In physics, absolute space and time may be a
is usually a special hypothetical
in which the laws of physics might appear to be identifiably
different (simpler) from those in other frames. In theories that apply the
principle of relativity to inertial motion, physics is the same in all
inertial frames, and is even the same in all frames under the general
principle of relativity.
Inertial Frame of Reference
frame of reference
in which bodies,
whose net force acting upon them is zero, are not accelerated; that is
they are at rest or they move at a constant velocity in a straight line.
In analytical terms, it is a frame of reference that describes time and
space homogeneously, isotropically, and in a time-independent manner.
Conceptually, in classical physics and special relativity, the physics of
a system in an inertial frame have no causes external to the system. An
inertial frame of reference may also be called an inertial reference
frame, inertial frame, Galilean reference frame, or inertial space. All
inertial frames are in a state of constant, rectilinear motion with
respect to one another; an accelerometer moving with any of them would
detect zero acceleration. Measurements in one inertial frame can be
converted to measurements in another by a simple transformation (the
Galilean transformation in Newtonian physics and the Lorentz
transformation in special relativity). In general relativity, in any
region small enough for the curvature of spacetime and tidal forces to be
negligible, one can find a set of inertial frames that approximately
describe that region. In a non-inertial reference frame in classical
physics and special relativity, the physics of a system vary depending on
the acceleration of that frame with respect to an inertial frame, and the
usual physical forces must be supplemented by fictitious forces. In
contrast, systems in non-inertial frames in general relativity don't have
external causes, because of the principle of geodesic motion. In classical
physics, for example, a ball dropped towards the ground does not go
exactly straight down because the Earth is rotating, which means the frame
of reference of an observer on Earth is not inertial. The physics must
account for the Coriolis effect
this case thought of as a force—to predict the horizontal motion. Another
example of such a fictitious force associated with rotating reference
frames is the centrifugal effect, or centrifugal force.
universe, space and time first started when there was energy that could
move at the speed of light
with resting mass
includes planets, electrons, you/me, etc.). The difference in speed
creates what we perceive
as a temporal dimension where resting mass is
always trying to catch up to the speed of light. The gap between the 2
types of energy is called 3D space
. Time slows the faster you move until
the point when you get to the speed of light (c) and time stops. It no
longer moves forward or backward. This is time dilation
and helps prove
this is true. Because stuff with resting mass can never catch up the
process is ongoing and fast moving energy continues to speed away in all
directions, creating more space. This also explains the arrow of time
and helps explain gravity
as being a decrease in the
expansion of or
A Brief History of Time
is a popular-science book on cosmology (the
study of the universe) by British physicist
. It was first published in 1988. Hawking wrote the
book for nonspecialist readers with no prior knowledge of scientific
theories. In A Brief History of Time, Hawking writes in non-technical
terms about the structure, origin, development and eventual fate of the
, which is the object of study
. He talks about basic concepts like
space and time, basic building blocks that make up the universe (such as
quarks) and the fundamental forces that govern it (such as gravity). He
writes about cosmological phenomena such as the Big Bang and
. He discusses two major
theories, general relativity and quantum
, that modern scientists use to describe the universe.
Finally, he talks about the search for a unifying theory that describes
everything in the universe in a coherent manner. The book became a
bestseller and sold more than 10 million copies in 20 years. It was also
on the London Sunday Times bestseller list for more than five years and
was translated into 35 languages by 2001.
Extended Interview: Last Week Tonight with John Oliver (HBO)
Philosophy of Space and Time
is the branch of
concerned with the
issues surrounding the ontology
character of space and time. While such ideas have been central to
philosophy from its inception, the philosophy of space and time was both
an inspiration for and a central aspect of early analytic philosophy. The
subject focuses on a number of basic issues, including whether time and
space exist independently of the mind, whether they exist independently of
one another, what accounts for time's apparently unidirectional flow,
whether times other than the present moment exist, and questions about the
nature of identity (particularly the nature of identity over time).
is a mathematical transformation in physics that
moves the times of events through a common interval. Time translation
symmetry is the hypothesis that the laws of physics are unchanged, (i.e.
invariant) under such a transformation. Time translation symmetry is a
rigorous way to formulate the idea that the laws of physics are the same
throughout history. Time translation symmetry is closely connected, via
the Noether theorem, to conservation of energy. In mathematics, the set of
all time translations on a given system form a
. There are many
symmetries in nature besides time translation, such as spatial translation
or rotational symmetries. These symmetries can be broken and explain
diverse phenomena such as crystals, superconductivity, and the Higgs
mechanism. However, it was thought until very recently that time
translation symmetry could not be broken. Time crystals, a state of matter
first observed in 2017, break time translation symmetry.
states that every differentiable symmetry
of the action of a
physical system has a corresponding conservation law.
in physics is an observable of a physical system which
remains unchanged under some transformation. Invariance, as a broader
term, also applies to the no change of form of physical laws under a
transformation, and is closer in scope to the mathematical definition.
Invariants of a system are deeply tied to the symmetries imposed by its
environment. Invariance is an important concept in modern theoretical
physics, and many theories are expressed in terms of their symmetries and
when you look up and see a ball headed toward you? Without even thinking
about it, you flinch
That might be because our brains are constantly living our lives in
fast-forward, playing out the action in our head before it happens.
that a person can travel back in
past or travel forward in time into the future. Time travel is the
of a human being having the ability to move
between certain points in time
or move between
points in space
. The ability to time travel is usually
when someone builds a hypothetical
device known as a
that can enter a
that connects distant points
. Sometimes a
is imagined as a vehicle.
is a visual effect
reversing the order of the frames of a film
or video makes time appear to
run backward. A special effect in cinematography
whereby the action that
is filmed is shown backwards.
or visual tricks used in the theatre,
film, television, video game, and
imagined events in a story or virtual world
Reverse tape effects
is an audio effect in which reversing the
direction of an audio recording renders sounds backward.
or time reversal symmetry is the expected symmetry of
physical laws independent of whether time runs forward or backward.
T-Symmetry is the theoretical symmetry of physical laws
under a time reversal transformation. Particles
is the ability of some processes to operate in
either direction of time. Space Travel
Time Reversal Signal Processing
is a technique for focusing acoustic
and electromagnetic waves by reversing in time a system's response
signals.If you could separate
time from space
, then what time would it be when you got there?
Being here now
is not the
same as now somewhere else. Time
are linked together, so what happens when you unlink
time and space?
Everyone is a Time Traveler
You time travel when you think about your
You time travel when you think about past events in
You time travel when you plan for the
You time travel when you talk to someone younger or older then
You time travel when you look at the
Second chances happen all the time, it's called learning from
mistakes. I travel more now then I
ever did. I travel into the future, I travel into the past, and
then I travel back into the present to document my findings.
is real, as long as you learn not to associate
time traveling with your physical self, like they portray in the
, which is totally inaccurate and misleading.
themselves are a form of time travel, just like
. I am a time
traveler, and I spend a lot of time in the future, but the weird
part is, I have a feeling that I'm not alone. Many things in
Life are traveling at different
, which depends on their size, their locations, the
. And these varying
is one of the reasons that makes life happen.
And intelligent life such as humans can witness and interact with
these varying speeds. Maybe time travel
is a one way trip
. Are you willing to abandon your time period for
another time period that you know little about, and without a chance to
Books about Time Travel
Movies about Time Travel
- Back To The Future (1985), Primer (2004),
Groundhog Day (1993), Time Bandits (1981), Terminator 2: Judgement Day
(1991), Donnie Darko (2001), Looper (2012), 12 Monkeys (1995), Bill &
Ted’s Excellent Adventure (1989), Timecop (1994), Flight of the Navigator
(1986), Edge of Tomorrow (2014), The Time Machine (1960), Hot Tub Time
Machine (2010), Escape from the Planet of the Apes (1971), X-Men Days of
Future’s Past (2014), Star Trek IV: The Voyage Home (1986), Star Trek
(2019) - "If you travel back in time into the past,
that past becomes your new future, and your former present self becomes
the past, which can't be changed by your new future."
is a 2014 Australian science fiction action thriller
film about a time-travelling agent who enters into the paradox's of
traveling to other moments in time. A person can become the same person in
time that they are trying to find. You could give birth to yourself and
than lose yourself, without having the time to find yourself.
Time catches up to you
. "Never do yesterday
what should be done tomorrow."
was a TV show that portrayed a physicist who leaps
through spacetime during an experiment in time travel, by temporarily
taking the place of other people to correct historical mistakes. Dean
Stockwell co-stars as Admiral Al Calavicci, Sam's womanizing,
cigar-smoking companion and best friend, who appears to him as a hologram.
is a plot device in which periods of time are
repeated and re-experienced by the characters, and there is often some
hope of breaking out of the cycle of repetition. Time loop is sometimes
used to refer to a causal loop; although they appear similar, causal loops
are unchanging and self-originating, whereas time loops are constantly
resetting: when a certain condition is met, such as a death of a character
or a clock reaches a certain time, the loop starts again, with one or more
characters retaining the memories from the previous loop. Stories with
time loops commonly center on the character learning from each successive
loop through time. Time Loop Movies
is a type of temporal
in which the
first impression following the introduction of a new event or task demand
to the brain appears to be extended in time. For example, chronostasis
temporarily occurs when fixating on a target stimulus, immediately
following a saccade (i.e., quick eye movement). This elicits an
overestimation in the temporal duration for which that target stimulus
(i.e., postsaccadic stimulus) was perceived. This effect can extend
apparent durations by up to 500 ms and is consistent with the idea that
the visual system models events prior to
Space and the Universe
is a time-bending tactical technique for missions:
you approach it moving forward in time, and then also approach it in
reverse moving backwards from the future – each side using the knowledge
that the other side gained from having already experienced it.
is relating to time or limited by
time. Pincer Movement
is a military attack
by two coordinated forces that close in on an enemy position from
or time travel paradox is a paradox, an
, or a logical contradiction that is associated with
the idea of time and time travel
Temporal paradoxes fall into two broad groups: consistency paradoxes
exemplified by the grandfather paradox; and causal loops.
is the idea of changing the past
contradictory, and results in a
, which is a paradox of time travel
inconsistencies emerge through changing the past. The name comes from the
paradox's common description as a person who travels to the past and kills
their own grandfather, preventing the existence of their father or mother
and therefore their own existence. Any inconsistency in past events may be
regarded as a grandfather paradox.
is the human ability to mentally place
ourselves in the past, in the future, or in counterfactual situations, and
to thus be able to examine our own thoughts. Our sense of self affects our
behavior, in the present, past and future. It relates to how we reflect on
our own past behavior, how we feel about it, and this in turn determines if we do it again.
Go Back in Time to Warn Yourself
What if you could travel back in
and be able to talk to your past self
when you were just 10 years old,
what would you
? And what advice would you give
?.."Hey dude, I'm you 50 years from
now in the future, I have to warn you, there is so much you still don't
know, and schools are not teaching everything that you need to know. And
some of the things that you think you know, are actually wrong and not
true. But your ignorance is not your fault, you didn't learn how important
learning is or did you have access to the most valuable knowledge and
information that you need to fully understand yourself and the world
around you. So here is all the knowledge and
information that I have accumulated so far in 50 years
save you a lot of time
also reduce the mistakes that you don't need to make. Even 50 years from
now there will still be many things to learn, so never stop learning. Good
Luck and never forget how important you are, you are not alone, and you
will always be loved, always."
Letter to your Younger Self
... "Dear younger me, there is so much that you don't know, and so much that you are unaware
of. And the worst part is, you don't even know this. The only sure way to
understand how much you still don't know, is to learn. You will have to do
a lot of reading so that you can acquire all the valuable knowledge and
information that you will need to accurately understand yourself and the
world around you. The good news is, I created a document with all the
valuable knowledge and information that I could find. The document is
called Basic Knowledge 101.com, which you can hopefully find on several
computers that are all over the world, and which you can hopefully access
using the internet and a computer. If you don't know what a computer is or
know what the internet is, or if these things have not been invented yet,
then you will have to locate a printed copy of Basic Knowledge
101.com, which I was able to bring with me back in time. This document will take you at least a couple of years to read
in its entirety. And once you have completed reading Basic Knowledge 101.com,
will change in the most
ways that you could ever imagine. Good luck, and may the
power of knowledge be with you."
I could tell you who you should
date and who you should not date, and I could tell you everything that you
did wrong, and I could also tell you the decisions that you made that
turned out bad, but, if you are more educated than I was, then you will
figure this out a lot easier than I did. Besides that, I don't want to
ruin any surprises, because you're going to have a lot of surprises.
You Can't Change the Past
, but you can
change how you react to past events, and you can
change how you remember
, and you can also change which events in the past that you
remember the most. If you want to change the past, you have to make
changes in the present that will change your future, so that in the
future, when you or other people remember your past, they will see more
than just the horrible moments that happened in your life, but they will
also see all the other great moments that happened in your life. We are
not defined by past events, we are defined by
what we have learned from
, and how we
to the present.
Second chances happen in
A lot of people said that if they
had a chance to travel back in time, they would kill Hitler
. But if you
were intelligent, you would go back in time to help educate Hitler instead
of killing him. Then he could have helped educated others. So, by the time that you
are born, all the problems in the world would be solved. So that means
that every person alive has the ability to time travel, they just have to
choose the time they want to live in, and then understand that everything
that they do now will affect their future self. But the reality is, it's
not just you who gets affected by your past actions, it's everyone else
and everything else that gets affected by your past actions.
What if you could go back in time to
stop wars and crimes
You can see the future
, so you
can also stop wars and crimes from happening. You might not know the exact
day or how, but you know what causes wars and crimes, which is
the ignorance of men
. When we
educate men more fully, then intelligent men will not start wars or commit
future self is talking shit about you
, let your future self know
that the jokes on them, because you're going to ruin their life, and your
future self will not be able to talk shit about you in the future. So take
that my future self, time travel rules. Oh wait, forget that. I love you
future self, please tell me the things that I'm doing wrong so that I can
correct my mistakes now. I want my future self to say "I love you", and
say "You did it you crazy bastard, you freaking did it. I'm not going to
tell you your future or influence your decisions now, all can say is
thanks for everything that you did and thanks for everything that you
If you believe in time travel in the physical sense,
just remember that matter and mass and light travels too slow for a
universe this big. So for now, the only thing that we know of that can
transverse the universe, is the human mind. The mind has the ability to
remove the space in between solar systems and galaxies. Time and space
seems almost irrelevant when compared to consciousness. The human body
seems to be the perfect vessel for consciousness. But we should not
constrict ourselves when thinking about other ways of being. Experiencing
consciousness without the human form seems strange to even think about,
but eventually, when our body dies, we will hopefully learn the answer to
that question, "what happens when we die?" But for now, I don't have the
time to think about death. I need to be focused on what happens in life
when I live. So, "what happens when you live" should be the question that
you should be asking.
Life is incredible, but if you never learn
about all the different things that makes life incredible, your life will
seldom be incredible and your life will never be as incredible as knowing
what incredible is.
Time Perception - Time can be Understood in Many Different
refers to the
and the subjective
, of time
, which is measured
I can have
memories of the past
, and I can live in
the present moment
I can make plans
about the future.
So I live in the past, present and future
, almost at the same time. But if I'm
about the past, then
I'm not thinking about the present moment or the future. If I'm
about the present
moment, then I'm not thinking about the past or the
. If I'm thinking about the future, then I'm not thinking about
the present moment or the past. So in order to think about anything, I
need to have a past, a present and a future. The possibilities of the
human mind are endless. We think that we know what time is, but we just
started. Time is a measurement system for humans, which is not an
explanation of time or a full understanding of time, just a convenient
interpretation. As mind-blowing as it is, time is a tool, but an
incredible tool. Like all knowledge.
Philosophy of Mind
We don't experience time when we sleep
experience time when we are
. Time and space
to be nonexistent at these
moments. Time and space exists for the
who are awake and have
. Time is relative
is required to specify a
along with three spatial
Humans have a startling accurate
sense of time
, particularly when younger.
The mechanism we use for this seems to be a distributed system involving
the cerebral cortex
, cerebellum, and basal ganglia. Long term time keeping
seems to be monitored by the
, which is responsible for the
or body clock
. Short term time keeping is handled by other cell
Hippocampal “time cells” bridge the gap in memory for discontiguous events
is critical to
the flow of events in distinct
experiences and, in doing so, bridges temporal gaps between discontiguous
events. Here we report a robust hippocampal representation of sequence
memories, highlighted by “time cells
encode successive moments during an empty temporal gap between the key
events, while at the same times encoding location and ongoing behavior.
Furthermore, just as most place cells “remap” when a salient spatial cue
is altered, most time cells form qualitatively different representations
(“re-time”) when the main temporal parameter is altered. Hippocampal
neurons also differentially encode the key events and disambiguate
different event sequences to compose unique, temporally organized
representations of specific experiences. These findings suggest that
hippocampal neural ensembles segment temporally organized memories much
the same as they represent locations of important events in spatially
defined environments. A fundamental feature of episodic memory is the
temporal organization of serial events that compose a unique experience.
How do hippocampal neurons represent the temporal organization of extended
experiences and bridge temporal gaps between discontiguous events?
Time cells in the human hippocampus and entorhinal cortex support episodic
. Time cells are neurons
hippocampus and entorhinal cortex that fire at specific moments within a
cognitive task or experience. Episodic memory describes our ability to
weave temporally contiguous elements into rich and coherent experiences.
The formation of these memories requires the brain to represent temporal
information, and recent discoveries in animal models of
suggest that the activity
of “time cells
” in the mesial temporal lobe
(MTL) fulfills this critical role in memory formation. Like place cells,
which exhibit an increased probability of firing at specific locations, or
“place fields,” within an environment, time cells reliably fire at
specific and consistent moments, or “time fields,” within a longer time
interval. Single Neurons in the Human Hippocampus and
Encode the Passage of
Time. To represent temporal information, time cells fire at a preferred
time interval—their time field—that is defined relative to the beginning
and end of a period of fixed duration. Both the encoding and retrieval
periods of the free recall task were of relatively fixed duration.
Time Cells in the Hippocampus Are Neither Dependent on Medial Entorhinal
Cortex Inputs nor Necessary for Spatial Working Memory
. A key function
of the hippocampus and entorhinalcortex is to bridge events that are
discontinuous intime, and it has been proposed that medial
entorhinalcortex (mEC) supports memory retention by sustain-ing the
sequential activity of hippocampal timecells.
How the brain remembers right place, right time
. Studies could lead to
new ways to enhance memory for those with traumatic brain injury or
Alzheimer's disease. About a decade ago, a group of neurons known as "time
cells" was discovered in rats. These cells appear to play a unique role in
recording when events take place, allowing the brain to correctly mark the
order of what happens in an
. Located in the brain's hippocampus
these cells show a characteristic activity pattern while the animals are
encoding and recalling events. By firing in a reproducible sequence, they
allow the brain to organize when events happen. The timing of their firing
is controlled by 5 Hz brain waves
, in a process
known as precession. Investigations into whether humans also have
by using a memory task that makes strong demands on time-related
information. Recruited volunteers from the Epilepsy Monitoring Unit at UT Southwestern's Peter O'Donnell Jr. Brain Institute, where epilepsy
patients stay for several days before surgery to remove damaged parts of
their brains that spark seizures. Electrodes implanted in these patients'
brains help their surgeons precisely identify the seizure foci and also
provide valuable information on the brain's inner workings.
Growing Block Universe
states that the past and present exist while
the future does not exist
. The present is an objective property, to be compared
with a moving spotlight
. By the passage of time more of the world comes
into being; therefore, the block universe
is said to be growing. The
growth of the block is supposed to happen in the present, a
of spacetime, where more of spacetime
continually coming into being.
is a philosophical approach
to the ontological nature of
time, which takes the view that all existence in time is equally real, as
opposed to presentism or the growing block universe theory of time, in
which at least the future is not the same as any other time. Some forms of
eternalism give time a similar ontology to that of space, as a
with different times being as real as different places, and future events
are "already there
" in the same sense other places are already there, and
that there is no objective flow of time. It is sometimes referred to as
the "block time" or "block universe
" theory due to its description of
as an unchanging four-dimensional "block", as opposed to the
view of the world as a three-dimensional space
modulated by the passage of
One million years in Human
time might could be perceived as just being one day to another life form.
Like when you see a
video. Time is
and time has different scales
speed of light
is irrelevant. You might say
the speed of light is the same everywhere, but it's
how you measure it
. Time on earth is only unique to us. Once you leave
the planet or the solar system, time will need a new standard.
(flickers of light) - Space Time
Slow Motion Perception
is a postulated mental state wherein
time seems to be slowed down. People experiencing life-threatening
situations sometimes report that time seemed to have slowed down
Quintillionths of a Second in Slow Motion
. Observing and controlling
ultrafast processes with attosecond
Many chemical processes run so fast that they are only roughly understood.
To clarify these processes, researchers have now developed a methodology
with a resolution of quintillionths of a second. The new technology stands
to help better understand processes like
and develop faster computer chips
Areas of the Brain that Process Time
"Time flies when you're having fun" ..when you don't notice
the passage of time, time will feel like it passes quickly.
Time goes Faster
when you're busy doing
things and when you're
, like when traveling,
or doing activities that you like.
Time goes Slower
or not busy doing
anything important, like with some jobs or in
is a theory of time and
that the moment
one attempted to measure a moment
, it would be gone: one measures an
immobile, complete line, whereas time is mobile and incomplete. For the
individual, time may speed up or slow down, whereas, for science, it would
remain the same. Hence Bergson decided to explore the inner life of man,
which is a kind of duration, neither a unity nor a quantitative
multiplicity. Duration is ineffable and can only be shown indirectly
through images that can never reveal a complete picture. It can only be
grasped through a simple intuition of the imagination.
is the amount of elapsed time
between two events. The period of time
during which something continues.
is being active or fully engaged or
occupied. Characterized by much activity.
"Life starts out
slow then life gradually speeds up because we add more things
into our timeframe, which sadly makes us pay more
attention to the time
than to life itself."
Funny how Time Flies when you're
is to perceive time as going by very quickly when you
are enjoying something and not paying attention to the passing of time.
Kill Some Time
is to make time seem to
pass more quickly by doing something instead of just waiting. To spend
time doing something while one is waiting. To make time pass by performing
some unessential activity.
is an interval during
which a recurring
occurs. A periodically repeated
- RandomTime is related to the speed at
which our Earth turns
, and since most planets turn or rotate at
different speeds, our perception of time, and our measurement of time, is only
unique to Humans on Earth.
New experiences really do seem
to be longer in the memory than familiar ones. It’s called the
”, and it seems to be why time feels like it’s going
faster as you get older – because more stuff is familiar to you.
is an experimental design used within
psychology research. Presentations of sequences of repetitive stimuli are
infrequently interrupted by a deviant stimulus. The reaction of the
participant to this "oddball" stimulus is recorded.
take a break
pause, unwind, regroup and relax.
. It is typically a
graphic design showing a long bar labeled with dates alongside itself.
Units of Time
A second isn’t what you think
it is. Scientifically, it’s not defined as 1/60th of a minute,
“the duration of 9,192,631,770 periods of the radiation
corresponding to the transition between the
two hyperfine levels of the ground state of the caesium 133
would neither gain nor lose one second in
some 15 billion years.
is a clock that depends for its accuracy on another clock, a
master clock. Many modern clocks are synchronized, either through the
Internet or by radio time signals, to a worldwide time standard called
Coordinated Universal Time (UTC) based on a network of master atomic
clocks in many countries.Europe's standard
electrical frequency of 50 hertz
has fallen ever so slightly to 49.996
hertz. For electric clocks that rely on the frequency of the power
system — typically radio, oven and heating-panel clocks — the cumulative
effect was close to six minutes.
is the nominal frequency of the oscillations of alternating
current (AC) in an electric power grid transmitted from a power station to
the end-user. In large parts of the world this is 50 Hz, although in the
Americas and parts of Asia it is typically 60 Hz. Current usage by country
or region is given in the list of mains power around the world. During the
development of commercial electric power systems in the late 19th and
early 20th centuries, many different frequencies (and voltages) had been
used. Large investment in equipment at one frequency made standardization
a slow process. However, as of the turn of the 21st century, places that
now use the 50 Hz frequency tend to use 220–240 V, and those that now use
60 Hz tend to use 100–127 V. Both frequencies coexist today (Japan uses
both) with no great technical reason to prefer one over the other and no
apparent desire for complete worldwide standardization. Unless specified
by the manufacturer to operate on both 50 and 60 Hz, appliances may not
operate efficiently or even safely if used on anything other than the
intended frequency. In practice, the exact frequency of the grid varies
around the nominal frequency, reducing when the grid is heavily loaded,
and speeding up when lightly loaded. However, most utilities will adjust
the frequency of the grid over the course of the day to ensure a constant
number of cycles occur. This is used by some clocks
to accurately maintain
their time. (also known as power line frequency in American English or
mains frequency in British English).
The smallest standard
scientific measure of time is the “Planck
”. It takes you about five
hundred and fifty thousand trillion trillion trillion Planck
times to blink once, quickly.
Time is measured by one complete
, which is
, which equals one year (365 Days, or 365 Earth
Rotations), is an incremental tool which
divides one earth orbit around our sun into
Time is also measured by one
complete rotation of the earth, which is called one day. A
24 Hour Clock
is an incremental tool
that divides one rotation of the earth into
. Time is also measure by
, which is then calculated into how many earth
orbits around the Sun.
Can I make up for Lost Time?
Letter to your Younger Self
"Tomorrow is not a mystical land where 99% of all human
productivity, motivation and achievement is stored, that's today, so why
"The Past is all we know of the Future", which means that
our past experiences helps us to determine the future.
How much is your time worth
selfishly buy yourself some time, but time runs out for everyone. Everyone
needs to stop stealing time from future generations. Our ancestors gave us
this time that we have now, it is our duty to pass on time that is usable
is to move from one period in
time to another.
is the recording of programming to a storage medium to be
viewed or listened to after the live broadcasting. Typically, this refers
to TV programming but can also refer to radio shows via podcasts.
allows media, such as music or films, which are stored
on one device, to be accessed from another place through another device.
Time-shifted inhibition helps electric fish ignore their own signals
African fish called mormyrids communicate using pulses of electricity. New
research shows that a time-shifted signal in the brain helps the fish to
ignore their own pulse. This skill has co-evolved with large and rapid
changes in these signals across species. A solution to this problem is a
brain function called a corollary discharge. It's sort of like a negative
copy of the original message -- something that tells the fish: Ignore
this. But an animal's brain doesn't have to block sensory inputs during
the entire message to effectively ignore its own signal, according to new
research from biologists at Washington University in St. Louis. Instead,
the inhibitory signal -- that call to ignore -- is delayed in fish that
communicate using longer electric pulses, versus those using shorter
. Squaring time
allows you to see the change in something over time. This is the kind of
thing that comes up in calculus, and is key to understanding integrals and
derivatives. For example: Distance is measured in meters. ( m) Velocity,
the change in distance over time, is measured in meters per second.
Velocity, the change in distance over time, is measured in meters per
second. (m/s). Acceleration, the change in velocity over time, is measured
in meters per second per second. (m/s/s or m/s2). If we were to graph each
of these assuming a constant acceleration, we would see something
interesting. For these graphs, time is the x axis, and the y axis is the
measurement. If we start with acceleration, we would see a horizontal
line, because acceleration is not changing with time. Velocity, however,
is increasing at a constant rate. We would see a straight, diagonal line
that increases with time. Distance is now increasing the rate it increases
per second, so we would see an upward curve, like the right half of a U.
What is time squared
? (s^2). For instance in a Joule we have J = (
kg*m2 ) / s2. The top portion of the equation is easy to explain: there
are X kilograms of material for an area of Y meters. But what's with
squaring time? How can you say that intuitively, like in the numerator?
What does mathematically a second squared means? Let us consider we have a
Car that is traveling through space from point A to point B. At point A it
has 0 velocity; and at point B it reaches a velocity of 1m/s. The
acceleration therefore is 1m/s squared.
Time relates to
motion of matter within space
. Take away the matter, and there are no
properties for time to measure, or time relative to the matter. The space
may be infinite and may exist whether or not matter existed within it.
Time and space may be already separate, as time itself is merely a
concept to measure distance between between material objects and their
related velocities. Concepts of space and time are linked by common
dependence on the existence of objects. Every object is also a concept
that is scale dependent with arbitrarily defined boundaries in both space
and time. But every concept only has meaning
in relation to all other concepts
. No concept stands on it own. It is
impossible also to think of a single thing as an object without a subject
or a subject without an object. There two types of time, universal time
which runs as a backdrop to everything which as yet we do not understand
fully. Then relative time
which man instigated and uses. Objects in space
are described as three dimensional and can be measured, relative to their
height, width and depth.
Scientists say the universe is expanding,
expanding into what
? Something of course is outside the universe,
something much larger than the universe itself. So let's imagine standing
outside the universe, and the universe is the size of a basketball. So if
you were larger than the universe you could take a person from one end of
the universe and transfer them to the other side of the universe. Maybe
using a syringe like device, which would make it look like a
to us. To this person
outside the universe all time would exist always simultaneously. Time
would be just a record of a particular moment that is saved within the
universe like a hard
Zeno's Arrow Paradox
. If everything when it occupies an equal space is
at rest, and if that which is in
is always occupying such a
space at any moment, the flying arrow is therefore motionless. (as
recounted by Aristotle, Physics VI:9, 239b5). In the arrow
known as the fletcher's paradox), Zeno states that for motion to occur, an
object must change the position which it occupies. He gives an example of
. He states that in any one (duration-less) instant of
is neither moving to where it is, nor to where it is not.
It cannot move to where it is not, because no time elapses for it to move
there; it cannot move to where it is, because it is already there. In
other words, at every instant of time there is no motion occurring. If
everything is motionless at every instant, and
time is entirely composed
, then motion
is impossible. Whereas the first two paradoxes
divide space, this paradox starts by dividing time—and not into segments,
but into points. Paradox of Place From Aristotle:
If everything that exists has a place, place too will have a place, and so
on ad infinitum.
Dessa - Fighting Fish
Arrow of Time
involves the "one-way direction" or
"asymmetry" of time. This direction can be determined by studying the
organization of atoms, molecules, and bodies, and might be drawn upon a
four-dimensional relativistic map of the world.Time is not absolute.
There for there could be no time travel machine, only a time difference,
or a perceived difference in time
is perfect or complete or pure. Complete and without restriction or
qualification; sometimes used informally as intensifiers. Expressing
finality with no implication of possible change. Not capable of being
violated or infringed. Something that is conceived or that exists
independently and not in relation to other things; something that does not
depend on anything else and is beyond human control; something that is not
relative. Not limited by law.All Time
Exists all at once All the Time
. The Past, Present And Future exist
all at once simultaneously. Everyone is always
The illusion of
time : past, present and future all exist together
is a philosophical approach
ontological nature of time, which takes the view that all existence in
time is equally real, as opposed to presentism or the growing block
universe theory of time, in which at least the future is not the same as
any other time. Some forms of eternalism give time a similar ontology to
that of space, as a dimension, with different times being as real as
different places, and future events are "already there" in the same sense
other places are already there, and that there is no objective flow of
time. It is sometimes referred to as the "block time" or "block universe"
theory due to its description of space-time as an unchanging
four-dimensional "block", as opposed to the view of the world as a
three-dimensional space modulated by the passage of time.
Ways to Time Travel and 3 Complicated Ones
decomposes a function of time (a signal)
into the frequencies that make it up, in a way similar to how a musical
chord can be expressed as the amplitude (or loudness) of its constituent
notes. The Fourier transform of a function of time itself is a
complex-valued function of frequency, whose absolute value represents the
amount of that frequency present in the original function, and whose
complex argument is the phase offset of the basic sinusoid in that
"Objects can be traveling at different speeds depending on what
reference point we take, time can alter from different
reference perspectives, and mass can alter from different
is a difference in the elapsed time measured by two
, either due to a velocity difference relative
to each other, or
by being differently situated relative to a gravitational field. As a
result of the nature of space-time
, a clock that is
moving relative to an observer will be measured to tick slower than a
clock that is at rest in the observer's own
. A clock that is under the influence of a stronger
gravitational field than an observer's will also be measured to tick
slower than the observer's own clock. Such time dilation has been
repeatedly demonstrated, for instance by small disparities in a pair of
atomic clocks after one of them is sent on a space trip, or by clocks on
the Space Shuttle running slightly slower than reference clocks on Earth,
or clocks on GPS and Galileo satellites running slightly faster. Time
dilation has also been the subject of science fiction works, as it
technically provides the means for forward time travel
is a simple way of showing a basic feature of
. A clock is designed to work by
bouncing a flash of light off a distant mirror and using its return to
trigger another flash of light, meanwhile counting how many flashes have
occurred along the way. It is easy to show that people on Earth watching a
spaceship fly overhead with such a clock would see it ticking relatively
slowly. This effect is called time dilation.
Time Passes Quicker at a Higher Altitudes
Gravitational Time Dilation
is a form of time dilation, an actual
difference of elapsed time between two events as measured by observers
situated at varying distances from a
. The higher the gravitational potential (the farther
the clock is from the source of gravitation), the faster time passes.
Albert Einstein originally predicted this effect in his
and it has since been confirmed by tests of general relativity.
How can we be flying through space but at the same time feel
like we are frozen in time?
When we look up at the stars, year
after year, the same stars are in the same
, almost looking like nothing has changed. Are we seeing the same
stars that people saw a thousand years ago?
Timeline of the Far Future
predicts how life will evolve over time;
and plate tectonics, which shows how continents shift over millennia.
Knowledge be Preserved
Are we there yet?
This question is really
saying, "why don't I know where I am?" If I am here, then where is here?
And if I am going somewhere, then where is there? I'm lost, or I'm just
not paying attention and I'm definitely not managing time, or space. So to
say, "are we there yet? Is really saying, "have I learned anything yet?"
is a measurement system
, a process for learning and a
important Tool that helps us plan and predict.
Though the timing of cycles
are essential for
, try not to
spend to much time
thinking about time
, this is just one
tools that we have.
Primacy of Consciousness
is the time difference obtained by subtracting
or UT from
or TT: ΔT=TT−UT.
of a linear mapping T : V - V from some
vector space V to itself is a subspace W of V that is preserved by T; that
is, T(W) - W.
Do you believe that time exists
describes a variety of methods that
measure the time that it takes for an object, particle or acoustic,
electromagnetic or other wave to travel a distance through a medium. Action Physics
is a quasiperiodic oscillation of the
equatorial zonal wind between easterlies and westerlies in the tropical
stratosphere with a mean period of 28 to 29 months.
displays irregular periodicity. Periodic
defined as recurring at regular intervals, such as "every 24 hours.
is the repetitive variation, typically in time, of some
measure about a central value (often a point of equilibrium) or between
two or more different states. The term vibration is precisely used to
describe mechanical oscillation. Familiar examples of
a swinging pendulum and alternating current power.
Time is of the Essence
Time is of the Essence
something must be done immediately and that time is an important, crucial
and significant feature of a thing that is essential to a particular
action or response, and failure to complete the required performance by a
certain time or date will cause unnecessary consequences and maybe even
Time is of the Essence
when used in a
, places the other party on notice that failure to
complete a required performance by a date certain set forth therein will
constitute an incurable breach. Indicating that one or more parties to the
agreement must perform by the time to which the parties have agreed if a
delay will cause material harm.Date
is a legal term for the date on or by which the actions of
a contract can be reasonably completed, and is considered to be legally
making it necessary to hurry and move fast at a high rate of
speed. Haste makes Waste
is used to
say that doing something too quickly
result in time, effort and materials being wasted.
sometimes necessary. Though going to fast sometimes does increase the
and mistakes. So go as fast as you possibly can while being safe as you
possibly can. Haste not Waste
- Taking a Break
"You don't want to rush into
things, and you don't want to move too slowly either."
is the choicest or most
essential or most vital part of some idea or experience. The central
Of the Essence
important, indispensable and crucial.
‘I only have a minute, 60 seconds in it, Forced upon
me, I did not choose it, But I know that I must use it, Give account if I
abuse it, Suffer if I lose it. Only a tiny little minute, But eternity is
in it.’ -
(wiki) - A pioneering civil rights leader who was the
president of Morehouse College during Martin Luther King Jr. education
- First House floor speech (1996).
"Even when I'm doing all the things that I can, I still feel
sometimes like I'm not doing enough, like there's another level of
productivity that I haven't reached yet, where time management becomes
more machine like, where every minute is correctly, effectively and
efficiently calculated and divided up in a way that I can complete as many
tasks that I can in one day. But I must do this without having time
interfere with life, or have time interrupt life, or have time diminish
life. So within that machine like management of time there has to be time
set aside to just think and reflect, or you may risk not having a life,
and not feel alive, or even feel human."
is that amount of time which is fairly necessary, conveniently, to do
whatever is required to be done, as soon as circumstances permit.
“Better late than never, but never late is better”
say "I Don’t have Enough Time
". You have exactly the same number
of hours per day that everyone else has, well almost everyone. Instead of saying
"I don't have the time", you could say, "I
currently have other responsibilities
other people are counting on
me to fulfill those responsibilities, but when those commitments change, I would like to know more about what you do,
as well as the ways that I could help you".
20 Minute Rule
American Time Use Survey: How people
spend their Time
Where our Time Goes
You Only have So Much Time
. If you live to
be 100 years
old you'll live 876,000
hours in your life
. Minus 300,000 hours sleeping
, minus 73,000
, minus 120,000 hours
20,000 hours of school
and so on. That leaves you less than 300,000 waking
to do what you want,
or less than 34 years being awake to live, and that's
only if you live to 100 in good health
Don't waste your waking hours. And depending on where you live, you may
have to spend more time working and spend more time getting food and
water. And if you live to only 70 years old, that means you may have less
than 20 years of life
I can buy some time
, but time is
not for sale. So I'm not buying time, I'm spending time in a particular
way for a particular purpose, usually by delaying something else so that
it will give me more time to do something else without interference from
the thing that I delayed.
Other things happening in your life
What's the Meaning of Life
Personal Time Off
is compensated time away from work, provided by an employer
to employees for them to use as they see fit. PTO is often measured in
hours and classified for different types of absences like sickness,
vacation time, and personal time.
extremely important tool when it comes to
But we cannot allow time to dictate and control all of our
actions all of the time, if we did, we would disconnect from
ourselves and reality, and become more machine like then human.
We have to relax and connect to our inner self a couple of times
a day. We have to separate our external time from our internal
time. We need time to ourselves, where time has no meaning, and
our mind is free to wander.
"There are many things in my life that I am
not totally in control of. Even though I am getting better at
controlling things in my life, I am still not in
everything. I prioritize
, but I have to learn how not to ignore
things that still may be important. So I have to learn how to
spend some more time on the lower priorities in my life, because
they still may have significance. How many things do I need to
be in control of in my life in order to feel that I am in
control of my life? Without turning into a
or becoming a
Value of Time
is the opportunity cost of the time that a
traveller spends on his/her journey. In essence, this makes it the amount
that a traveller would be willing to pay in order to save time, or the
amount they would accept as compensation for lost time.
we Frozen in Time, or are we Moving?
Let go of the concept of time as if time did not exist. Now
imagine the past, the present and the future being the same
thing, occupying the same space. Now look out at the stars at
night, you see the past, the present and the future, all at the
same time. Now stay there for a moment, think, experience life
without time.....can you explain it?
is the slowing or
stopping of life
by exogenous or endogenous means without termination. Breathing,
heartbeat, and other involuntary functions may still occur, but they can
only be detected by artificial means.
Time can be seen and time can be felt. Through
the years of changes our world has endured, through the changes we
experience in ourselves. Measured by moments and the rising of our Sun,
it's the one thing we can be thankful for when the day is done.
. Only Time will Tell
is the hope that people will eventually see the consequences or the
benefits of their actions in the future. Will you be alive to hear time
tell the results? Will time tell other people in the future that you were
a hero? Or will time tell other people in the future that you were an
ignorant person or a coward who did nothing? Or maybe time will not tell
people anything because what time had to say was lost, or manipulated.
Living on Borrowed Time
is an uncertain
and usually uncontrolled postponement of something
. To continue to live past the time one was
expected to die
and be likely to
die soon. To take and use something with the promise of returning it.
We have all had moments where we have helped someone in need, maybe
saving someone's life, and we remember how great we felt because
we know we did something that was needed, something that was
special, because we know how important help can be to someone in
need. I'm in one of those moments right now, except this is one
big moment, a much larger picture, a moment stretching many
lifetimes and encompassing many moments in time,
Except this type of time is not measured by our sun, this time stretches
across the universe. Time on earth has been slowed down, giving humans a
chance to see and experience life in a unique way. But our experience of
time is only unique to earth. Beyond our planet time takes on a whole new
meaning where time is not measured in seconds, hours, days or years, in
fact it's not a measurement at all, time is something that is felt and
experienced, which transcends all definitions of time and our
understanding of what time is. It is the ultimate moment.
Broken Social Scene "Halfway Home"
Sands of Time
refers to the passage
of time that
inevitability changes the world and that time is like
ever-shifting sand, it is never at a standstill, and that civilizations
can been buried or lost, and dreams that have faded in the sands of time.
I don't dream about the future
, the future
dreams about me, and the future is smiling. The past is also smiling,
because the past knows how far I've come and also sees what I'm doing now.
We're halfway home.
Songs About Time
Time In A
Bottle: Jim Croce, 1973
Time - Pink Floyd
Does Anybody Really Know What Time It Is
Turn! Turn! - The Byrds
Time Won't Let Me -
(youtube) - I can't wait forever, even though you want
me to.Its Now
or Never - Elvis Presley 1960
- Tomorrow will be too late, it's now or
never, My love won't wait. So don't
. Too Much
Time On My Hands - Styx
(youtube) - Having too much time is
impossible, the same goes for
Hazy Shade of Winter - The Bangles
Time Has Come Today (Chambers Brothers-Long Version) with no cuts to song
Time - Chris Farlowe
Is On My Side - The Rolling Stones
Time Is Gonna Come - Led Zeppelin
Fly Like An
Eagle - Steve Miller Band
- Time keeps on slippin', slippin', slippin' Into the future.No Time - The
- On my way to better things, (No time left for you), I found myself some
wings, (No time left for you), Distant roads are callin' me, (No time left
for you), No time for a gentle rain, No time for my watch and chain, No
time for revolving doors, No time for the killin' floor, No time for the
killin' floor, There's no time left for you, No time left for you, No time
for a summer friend, No time for the love you send, Seasons change and so
did I, You need not wonder why, You need not wonder why, There's no time
left for you, No time left for you.
Unchained Melody -
(youtube) - Woah, my love, my darling, I've
hungered for your touch, A long, lonely time
time goes by so slowly
, And time can do so
much, Are you still mine? I need your love, I need your love, God speed
your love to me. Lonely rivers flow, To the sea, to the sea, To the open
arms of the sea, yeah, Lonely rivers sigh, "Wait for me, wait for me",
I'll be coming home, wait for me
Woah, my love, my darling, I've
hungered, hungered for your touch, A long, lonely time, And time goes by
so slowly, And time can do so much
, Are you
still mine? I need your love, I need your love, God speed your love to me.
How many times do a clock's hands overlap in a
? The number of times the two hands coincide in a day is 22
times.Even a stopped clock is right twice a day
but how would you know which two times during the day that the clock was
right when you don't have a clock that works?