Picosecond to Hour (Sidereal) Converter
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How to Convert Picosecond to Hour (Sidereal)
To convert ps to seconds: multiply by 10⁻¹². To convert ps to nanoseconds: divide by 1,000.
1 ps = 10⁻¹² s = 1,000 fs = 0.001 ns. Light travels about 0.3 mm in one picosecond.
For example, 1 Picosecond (ps) = 2.785383e-16 Hour (Sidereal) (h (Sid)).
Picosecond to Hour (Sidereal) — Common Values
| Picosecond (ps) | Hour (Sidereal) (h (Sid)) |
|---|---|
| 0.1 | 2.785383e-17 |
| 0.5 | 1.392692e-16 |
| 1 | 2.785383e-16 |
| 2 | 5.570766e-16 |
| 5 | 1.392692e-15 |
| 10 | 2.785383e-15 |
| 25 | 6.963458e-15 |
| 50 | 1.392692e-14 |
| 100 | 2.785383e-14 |
| 500 | 1.392692e-13 |
| 1000 | 2.785383e-13 |
About Picosecond (ps)
Definition
The picosecond is a unit of time equal to 10⁻¹² seconds — one trillionth of a second.
Mathematical Relationship
1 ps = 10⁻¹² s = 1,000 fs = 0.001 ns. Light travels about 0.3 mm in one picosecond.
Conversion Formula
To convert ps to seconds: multiply by 10⁻¹². To convert ps to nanoseconds: divide by 1,000.
Practical Applications
Fiber optic signal timing, semiconductor switching speeds, and laser pulse durations in medical and industrial applications.
Interesting Facts
Light travels only about 0.3 mm (the thickness of a hair) in one picosecond. Modern transistors switch in just a few picoseconds.
Common Mistakes
Confusing picoseconds with nanoseconds — they differ by a factor of 1,000. In computing specs, read units carefully.
Educational Tips
Think of light distance: light goes ~30 cm in 1 ns and only ~0.3 mm in 1 ps. That's the speed/time relationship at this scale.
About Hour (Sidereal) (h (Sid))
Definition
The sidereal hour is 1/24 of a sidereal day — approximately 3,590.17 seconds (59 minutes and 50.17 seconds in solar time).
Mathematical Relationship
1 sidereal hour = 3,590.17 solar seconds ≈ 59 min 50.17 s in solar time. 24 sidereal hours = 1 sidereal day.
Conversion Formula
To convert sidereal hours to solar seconds: multiply by 3,590.17. To solar hours: multiply by 0.99727.
Practical Applications
Right ascension in celestial coordinates is measured in hours (0–24 h of sidereal time), directly using sidereal hours.
Interesting Facts
Right ascension is measured in hours: 1 h of RA = 15° of sky. The entire sky is 24 sidereal hours in rotation.
Common Mistakes
Treating sidereal hours as exactly 60 solar minutes. The ~10-second difference matters for precision tracking.
Educational Tips
If you use a star-tracking telescope, it rotates once per sidereal day (23h 56m). Each sidereal hour, it covers 15° of sky.