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Sentier.dev Common Units Taxonomy adapted from QUDT 2.1

Content language

Time > second

Preferred term

SECsecond

The $Second$ (symbol: $s$) is the base unit of time in the International System of Units (SI) and is also a unit of time in other systems of measurement. Between the years1000 (when al-Biruni used seconds) and 1960 the second was defined as $1/86400$ of a mean solar day (that definition still applies in some astronomical and legal contexts). Between 1960 and 1967, it was defined in terms of the period of the Earth's orbit around the Sun in 1900, but it is now defined more precisely in atomic terms. Under the International System of Units (via the International Committee for Weights and Measures, or CIPM), since 1967 the second has been defined as the duration of ${9192631770}$ periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.In 1997 CIPM added that the periods would be defined for a caesium atom at rest, and approaching the theoretical temperature of absolute zero, and in 1999, it included corrections from ambient radiation.

Time

http://dbpedia.org/resource/Second

0112/2///62720#UAA972
0112/2///62720#UAD722
s
SEC

ثانية

Arabic
секунда

Bulgarian
秒

Chinese
sekunda

Czech
seconde

French
Sekunde

German
δευτερόλεπτο

Greek
שנייה

Hebrew
सैकण्ड

Hindi
másodperc

Hungarian
secondo

Italian
秒

Japanese
secundum

Latin
saat

Malay
ثانیه

Persian
sekunda

Polish
segundo

Portuguese
secundă

Romanian
секунда

Russian
sekunda

Slovenian
segundo

Spanish
saniye

Turkish

URI

https://vocab.sentier.dev/units/unit/SEC

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