Chasles' theorem (kinematics)

In kinematics, Chasles' theorem, or Mozzi–Chasles' theorem, says that the most general rigid body displacement can be produced by a translation along a line (called its screw axis or Mozzi axis) followed (or preceded) by a rotation about an axis parallel to that line. Such a composition of translation and rotation is called a screw displacement.

See also: Screw axis
For other uses, see Chasles' theorem (disambiguation).
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