Second

:This article is about the unit of time. For other uses, see second (disambiguation).

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The second (symbol: s) is the SI base unit of time.

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The second is 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 atom.

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Second: Definition ►

SI base unit: The SI system of units defines seven SI base units: fundamental physical units defined by an operational definition....

Time: :For alternate uses of "time", see Time (disambiguation) or see TIME (magazine)....

Periods: REDIRECT period...

Second related Images and Photos (experimental)

Second Place	Second Sight (DVD)	Second Thoughs	Second Marriage
Split Second (1952) (DVD)	Superfriends: Second Season (DVD)	Second Civil War (DVD)	Split Second
Split Second	5 Second Rule Game	Second Chorus 1940	Second Fiddle 1939

~ Table of Content ~

►	Introduction
►	Definition
►	SI multiples
►	Origin
►	Conversions
►	Explanation
►	See also
►	External links

►	FR: Seconde

~ Related Subjects ~

Physical unit (1) - Fundamental (1) - SI (1) - TIME (1) - Time (disambiguation) (1) - Operational definition (1) - Atom (1) - Periods (1) - Time (1) - SI base unit (1) - Caesium (1) - Ground state (1) - Hyperfine levels (1) -

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