File:Clock-pendulum.gif · Wikimedia Commons · See Wikimedia Commons
ثانیه
Also known as s, seconds, sec., sec
The second (symbol: s) is a unit of time derived from the division of the day, first into hours, then into minutes, and lastly into seconds, for a total of 24 × 60 × 60 = seconds per day. That definition, based on of a rotation of the Earth, is still used by the Universal Time 1 (UT1) system.
AI overview
A second is a unit of time that results from dividing a day into progressively smaller units—first into 24 hours, then into 60 minutes, and finally into 60 seconds each, giving 86,400 seconds per day. This measurement system, originally based on Earth's rotation, remains the foundation of the Universal Time 1 (UT1) timekeeping system used today.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Unit.name
- second
- Unit.image
- File:Clock-pendulum.gif
- Unit.caption
- A pendulum-governed escapement of a clock, ticking every second
- Unit.standard
- SI
- Unit.quantity
- time
- Unit.symbol
- s
via Wikipedia infobox
Wikidata facts
Show 10 more facts
- exact match
- www.w3.org/TR/owl-time/#time:unitSecond
- short name
- sek.
- conversion to standard unit
- 9192631770
- Commons category