the minimum slope, measured in degrees from the horizontal, at which loose solid material will start to slide or flow.
- Angle of stall
- Angle of torsion
angle of torsion angle of torsion n. The degree of rotation of a long bone along its axis or between two axes.
- Angle of yaw
the acute angle between the longitudinal axis of an aircraft or spacecraft and a given reference direction, as viewed from above.
- Angle of view
the angle formed at a nodal point of a lens by the intersection of two lines drawn from the opposite ends of an image produced by the lens.