Prab: CSV import

2025-02-18T11:03:46Z

CSV import

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	[[Category:Philosophy]]		[[Category:Philosophy]]
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			<gallery>
			File:Wooden_hourglass_3.jpg\|Time
			File:Canberra_(AU),_Albert_Hall,_Sundial_--_2019_--_1740.jpg\|Time
			File:Florence-Duomo-Clock.jpg\|Time
			File:Swatch_Irony_angle_below.jpg\|Time
			File:ChipScaleClock2_HR.jpg\|Time
			File:Jain_scale_of_time.JPG\|Time
			File:Le_Temps.JPG\|Time
			File:World_line.svg\|Time
			File:Relativity_of_Simultaneity.svg\|Time
			File:Lorentz_transform_of_world_line.gif\|Time
			File:William_James_b1842c.jpg\|Time
			</gallery>

Prab: 1 revision imported

2019-10-02T04:04:27Z

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'''Time''' is the never-ending continued [[sequence|progress]] of [[existence]] and [[event]]s. It happens in an apparently [[wikt:irreversable|irreversable]] way from the [[past]], through the [[present]] to the [[future]].

To measure time, we can use anything that repeats itself regularly. One [[example]] is the start of a new [[day]] (as [[Earth]] [[rotation|rotates]] on its axis). Two more are the phases of the [[moon]] (as it orbits the Earth), and the seasons of the [[year]] (as the Earth orbits the [[Sun]]). Even in ancient times, people developed [[calendar]]s to keep track of the number of days in a year. They also developed [[sundial]]s that used the moving shadows cast by the sun through the day to measure times smaller than a day. Today, highly accurate [[clock]]s can measure times less than a billionth of a second. The study of time [[measurement]] is [[horology]].

The [[SI]] (International Systems of Units) unit of time is one [[second]], written as '''s'''.

In [[Einstein]]ian physics, time and space can be combined into a single concept. See [[space-time continuum]].

== Units of time ==
* 1 [[millennium]] = 10 centuries = 100 decades = 200 lustrums = 250 quadrenniums = 333.33 trienniums = 500 bienniums = 1,000 years
* 1 [[century]] = 10 decades = 20 lustrums = 25 quadrenniums = 33.33 trienniums = 50 bienniums = 100 years
* 1 [[decade]] = 2 lustrums = 2.5 quadrenniums = 3.33 trienniums = 5 bienniums = 10 years
*1 [[year]] = 12 months = 365 days (366 days in [[leap year]]s)
* 1 [[month]] = 4 weeks = 28 to 31 days
* 1 [[fortnight]] = 2 weeks = 14 days
* 1 [[week]] = 7 days
* 1 [[day]] = 24 hours
* 1 [[hour]] = 60 minutes
* 1 [[minute]] = 60 seconds
* 1 [[second]] = [[International System of Units|SI]] [[SI base unit#Base units of measurement|base unit]] of time
* 1 [[millisecond]] = 1/1,000 second
* 1 [[microsecond]] = 1/1,000,000 second
* 1 [[nanosecond]] = 1/1,000,000,000 second
* 1 [[picosecond]] = 1/1,000,000,000,000 of a second
* 1 [[femtosecond]] = 1/1,000,000,000,000,000 of a second
* 1 [[attosecond]] = 1/1,000,000,000,000,000,000 of a second
* 1 [[Planck time]] = smallest measurable unit of time

=== Things to measure time ===
* [[Clock]]
* [[Hourglass]]
* [[Stopwatch]]
* [[Sundial]]
* [[Circadian rhythm]]

== Time of day ==
* [http://www.timeanddate.com/worldclock/ World Clock]
* [http://tycho.usno.navy.mil/what1.html U.S. Naval Observatory]
* [http://www.hexadecimal-time.com Time in ] [[Hexadecimal numeral system]]

[[Category:Basic English 850 words]]
[[Category:Philosophy]]
[[Category:Time| ]]

← Older revision		Revision as of 11:03, 18 February 2025
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	[[Category:Philosophy]]		[[Category:Philosophy]]
	[[Category:Time\| ]]		[[Category:Time\| ]]
			<gallery>
			File:Wooden_hourglass_3.jpg\|Time
			File:Canberra_(AU),_Albert_Hall,_Sundial_--_2019_--_1740.jpg\|Time
			File:Florence-Duomo-Clock.jpg\|Time
			File:Swatch_Irony_angle_below.jpg\|Time
			File:ChipScaleClock2_HR.jpg\|Time
			File:Jain_scale_of_time.JPG\|Time
			File:Le_Temps.JPG\|Time
			File:World_line.svg\|Time
			File:Relativity_of_Simultaneity.svg\|Time
			File:Lorentz_transform_of_world_line.gif\|Time
			File:William_James_b1842c.jpg\|Time
			</gallery>

Time - Revision history

Prab: CSV import

Prab: 1 revision imported