The moment of inertia tensor may be diagonalized by transforming to a appropriate coordinate system. The moments of inertia in the coordinate system, corresponding to the eigenvalues of the tensor, are extremely important in the analysis of dynamics, and are known as principal moments of inertia.
Moment of Inertia, Moment of Inertia Tensor, Precessional Constant, Rotational Stability, Routh's Rule
