rev
revolution
Angleexact by definition
One revolution, also called a turn or cycle, is a complete rotation: exactly 360 degrees or \(2\pi\) radians. The relation is exact by definition, though \(2\pi \approx 6.283185\) is irrational and the stored decimal is rounded. It is the natural unit for counting rotations of shafts, wheels and encoders.
Watch out: Revolutions per minute is quoted both as a frequency (1/60 Hz) and as an angular speed (\(\pi/30\) rad/s). The two differ by a factor of \(2\pi\), and using the wrong one is the most common rotational-dynamics error.
| 1 rev | 360 ° |
Solvers that use angle