Convert Revolutions per hour to Nanoradians per second
Convert Revolutions per hour (rev/h) to Nanoradians per second (nrad/s) instantly and accurately.
Conversion Formula
nrad/s = rev/h × 1745329.252
About Revolutions per hour
The revolution per hour (rev/h) equals π/1800 rad/s ≈ 1.745 × 10⁻³ rad/s, used for very slow rotating machinery. Cement rotary kilns - the world's longest continuously rotating machines (up to 230 m, 4000 t) - rotate at 1-5 rev/h; ball mills for ore grinding at 10-20 rev/h; concrete mixer trucks at 1-4 rev/h during transport. Large astronomical antenna drives and slow-scan telescope azimuth movements are also conveniently expressed in rev/h. 1 rev/h = π/1800 rad/s ≈ 0.02778 rpm.
About Nanoradians per second
The nanoradian per second (nrad/s) is 10⁻⁹ rad/s, accessible only to the most sensitive geodetic rotation sensors. The Wettzell G-ring laser gyroscope (4 m × 4 m Sagnac interferometer, Bavaria) measures Earth's rotation of ~72.92 µrad/s to a few nrad/s, resolving the Chandler wobble and polar motion. The proposed GINGER experiment targets the Lense-Thirring gravitomagnetic frame-dragging effect, predicted at ~39 nrad/s. State-of-the-art tactical-grade MEMS gyroscopes reach ~100 nrad/s/√Hz noise floors. 1 nrad/s = 10⁻⁹ rad/s ≈ 7.46 × 10⁻⁷ rpm.
Quick Reference Table
| Revolutions per hour (rev/h) | Nanoradians per second (nrad/s) |
|---|---|
| 1 rev/h | 1745330 nrad/s |
| 2 rev/h | 3490660 nrad/s |
| 5 rev/h | 8726650 nrad/s |
| 10 rev/h | 17453300 nrad/s |
| 25 rev/h | 43633200 nrad/s |
| 50 rev/h | 87266500 nrad/s |
| 100 rev/h | 174533000 nrad/s |