Convert femtosecond to hour (sidereal)
Please provide values below to convert femtosecond [fs] to hour (sidereal) [None], or Convert hour (sidereal) to femtosecond.
How to Convert Femtosecond to Hour (Sidereal)
1 fs = 2.78538308834547e-19 None
Example: convert 15 fs to None:
15 fs = 15 × 2.78538308834547e-19 None = 4.17807463251821e-18 None
Femtosecond to Hour (Sidereal) Conversion Table
| femtosecond | hour (sidereal) |
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Femtosecond
A femtosecond (fs) is a unit of time equal to 10^-15 seconds, or one quadrillionth of a second.
History/Origin
The femtosecond was introduced in the 20th century with advancements in ultrafast laser technology, enabling measurement and manipulation of phenomena occurring on extremely short timescales.
Current Use
Femtoseconds are used in fields such as physics, chemistry, and biology to study ultrafast processes like chemical reactions, electron dynamics, and laser pulse durations.
Hour (Sidereal)
An hour (sidereal) is a unit of time based on the Earth's rotation relative to distant stars, equal to approximately 3,894 seconds, used primarily in astronomy.
History/Origin
The sidereal hour originated from the ancient division of the day based on Earth's rotation relative to the stars, differing from the solar hour by about 4 minutes, and has been used historically in astronomy for precise timekeeping.
Current Use
Sidereal hours are mainly used in astronomy and astrophysics to measure celestial events and the Earth's rotation relative to distant celestial objects, rather than in everyday timekeeping.