Convert femtosecond to hour (sidereal)
Please provide values below to convert femtosecond [fs] to hour (sidereal) [None], or Convert hour (sidereal) to femtosecond.
1 fs = 2.7854e-19 None. To convert femtosecond to hour (sidereal), multiply the value by 2.7854e-19; to go the other way, divide by it (1 None = 3.5902e+18 fs). Both units measure time and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 fs = 2.7854e-19 None
- 1 None = 3.5902e+18 fs
- 10 fs = 2.7854e-18 None
- 100 fs = 2.7854e-17 None
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) |
|---|---|
| 1 fs | 2.7854e-19 None |
| 2 fs | 5.5708e-19 None |
| 3 fs | 8.3561e-19 None |
| 5 fs | 1.3927e-18 None |
| 10 fs | 2.7854e-18 None |
| 20 fs | 5.5708e-18 None |
| 50 fs | 1.3927e-17 None |
| 100 fs | 2.7854e-17 None |
| 500 fs | 1.3927e-16 None |
| 1000 fs | 2.7854e-16 None |
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.
Frequently Asked Questions
What is 1 femtosecond in hour (sidereal)?
1 femtosecond (fs) = 2.7854e-19 hour (sidereal) (None).
How do you convert femtosecond to hour (sidereal)?
Multiply the femtosecond value by 2.7854e-19. For example, 25 fs × 2.7854e-19 = 6.9635e-18 None.
What is 10 femtosecond in hour (sidereal)?
10 fs = 2.7854e-18 None.
Which unit is larger, the femtosecond or the hour (sidereal)?
The hour (sidereal) is the larger unit: 1 fs equals only 2.7854e-19 None.