rotation as motion

Motion can be through angle around point or axis {rotation, motion}.

comparison

All linear distance, velocity, acceleration, and time relations are true for angular counterparts.

vectors

Angular quantities are vectors, perpendicular to curve plane. If right-hand fingers point in motion direction, vector points in thumb direction.

examples

Top, gyroscope, wheel, gears, banked track, and airplane dive and turn illustrate angular motion.

universe

Rotation is not relative but is absolute against distant-galaxy and universe reference frame.

Date Modified: 2022.0224