Wikipedia
Angular displacement of a body is the angle in radians ( degrees, revolutions) through which a point or line has been rotated in a specified sense about a specified axis. When an object rotates about its axis, the motion cannot simply be analyzed as a particle, since in circular motion it undergoes a changing velocity and acceleration at any time (t). When dealing with the rotation of an object, it becomes simpler to consider the body itself rigid. A body is generally considered rigid when the separations between all the particles remains constant throughout the objects motion, so for example parts of its mass are not flying off. In a realistic sense, all things can be deformable, however this impact is minimal and negligible. Thus the rotation of a rigid body over a fixed axis is referred to as rotational motion.
Usage examples of "angular displacement".
The margin of error allowed is described by a fourth-order differential equation involving distance, energy, and the angular displacement of charge application away from the lattice axis of the LMT crystal.
Scotty picked the figure for that angular displacement off the sheet, typed in three quick digits, and stamped on the firing switch.
The image twitched sideways: Scotty picked the figure for that angular displacement off the sheet, typed in three quick digits, and stamped on the firing switch.