Second
id:
second-207-10440421
title:
Second
text:
The second is the unit of time in the International System of Units (SI), historically defined as 1⁄86400 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. The current and formal definition in the International System of Units (SI) is more precise:The second [...] is defined by taking the fixed numerical value of the caesium frequency, ΔνCs, the unperturbed ground-state hyperfine transition frequency of the caesium
brand slug:
wiki
category slug:
encyclopedia
description:
SI unit of time
original url:
https://en.wikipedia.org/wiki/Second
date created:
2001-07-27T08:02:47Z
date modified:
2024-09-11T07:27:37Z
main entity:
{"identifier":"Q11574","url":"https://www.wikidata.org/entity/Q11574"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/15/Clock-pendulum.gif","width":353,"height":669}
fields total:
13
integrity:
16