Instant · Precise · Universal
28 units available
6 categories total
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
For example, 1 Minute (Sidereal) (min (Sid)) = 5.983617e+16 Femtosecond (fs).
| Minute (Sidereal) (min (Sid)) | Femtosecond (fs) |
|---|---|
| 0.1 | 5.983617e+15 |
| 0.5 | 2.991809e+16 |
| 1 | 5.983617e+16 |
| 2 | 1.196723e+17 |
| 5 | 2.991809e+17 |
| 10 | 5.983617e+17 |
| 25 | 1.495904e+18 |
| 50 | 2.991809e+18 |
| 100 | 5.983617e+18 |
| 500 | 2.991809e+19 |
| 1000 | 5.983617e+19 |
The sidereal minute is 1/60 of a sidereal hour — approximately 59.836 seconds in solar time.
1 sidereal minute = 59.836 solar seconds. 60 sidereal minutes = 1 sidereal hour.
To convert sidereal minutes to solar seconds: multiply by 59.836. To solar minutes: multiply by 0.99727.
Precise observation timing, transit event recording, and telescope tracking rate calibration.
A sidereal minute is about 0.164 seconds shorter than a solar minute — small but significant over an observing session.
Using solar minutes when sidereal minutes are required in astronomical calculations — the error accumulates over time.
Sidereal minutes/seconds are just slightly shorter than their solar counterparts. The ratio is always ~0.99727.
The femtosecond is a unit of time equal to 10⁻¹⁵ seconds — one quadrillionth of a second.
1 fs = 10⁻¹⁵ s = 0.001 ps = 1,000 as. Light travels about 0.3 µm in one femtosecond.
To convert fs to seconds: multiply by 10⁻¹⁵. To convert fs to picoseconds: divide by 1,000.
LASIK eye surgery uses femtosecond lasers. Also used in precision micro-machining and optical frequency combs.
A femtosecond is to one second as one second is to about 31.7 million years. The fastest chemical reactions occur on femtosecond timescales.
Confusing femtoseconds with picoseconds. Remember: fs is 1,000× shorter than ps.
Ahmed Zewail's Nobel-winning work proved we can 'photograph' chemical reactions happening in femtoseconds using ultrafast laser pulses.



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