Kinematics: Deformation and Expansion

This lecture covers the concepts of kinematics related to deformation and expansion, focusing on the radial expansion of a sphere and linear expansion. The instructor explains the principles behind the deformation of circular arcs and the changes in thickness and centerline length. The lecture also delves into the torsion of a cylinder and the rotation by an angle around different axes. The content includes the mapping of vectors, radial displacement, and the gradient operator. The examples provided illustrate the application of these concepts in various scenarios.