This module is the introduction to model rotational motion. All of the concepts are conveniently recast into forms that have the same mathematical forms as their translational counterparts.

This site provides an excellent overview of the solution process. Content includes a focus on how a solution is formed, energy changes and solution formation, spontaneity and disorder, and solution formation and chemical reactions.

Described is a simple low cost home-made device that converts the radio wave energy from a mobile phone signal into electricity to light an LED. No battery or complex circuitry is required. The device can form the basis of a range of...