#PhysicsFactlet
The dynamics of a rigid sphere can be surprisingly complicated. In fact, beside rotating around an axis, the sphere can also precess (i.e. the axis of rotation is itself rotating) and nutate (i.e. the axis of rotation oscillates back and forth).

Euler's angles are particularly useful to describe such motion, as:
* Rotation is a change in the third Euler angle.
* Precession is a change in the first Euler angle.
* Nutation is a change in the second Euler angle.

#Physics #ClassicalMechanics #EulerAngles #Visualization