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second

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Second
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 (abbreviated s or sec); it is the second division of the hour by sixty, the first division by 60 being the minute. Between AD 1000 (when al-Biruni used seconds) and 1960 the second was defined as 1/86,400 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. Seconds may be measured using mechanical, electric or atomic clocks.

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Second

© Dieser Eintrag beinhaltet Material aus Wikipedia und ist lizensiert auf GNU-Lizenz für freie Dokumentation und Creative Commons Attribution-ShareAlike License

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Second
Second (en castellano: segundo) puede referirse a:

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Segundo

© Este artículo utiliza contenidos de Wikipedia® y está disponible bajo los términos de la Licencia de documentación libre GNU

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Second
Cette page d’ répertorie les différents sujets et articles partageant un même nom.

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Seconde (temps)
La seconde est l’unité de mesure de temps du système international, de symbole s. Le terme provient de la francisation écourtée de l’expression latine (latin médiéval), qui signifiait littéralement minute de second rang, c’est-à-dire seconde division de l’heure.

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Second
Second è un EP dei Baroness pubblicato nel 2005.

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© Questo articolo utilizza materiale tratto da Wikipedia® ed è autorizzato sotto la licenza GNU Free Documentation License

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