Microcomputer listens to the coefficient of restitution

A previous article in this Journal titled ’’Listening to the coefficient of restitution,’’ describes a procedure for determining the coefficient by measuring the times between bounces for a ball dropped onto a hard surface. The procedure has been completely computerized. A microcomputer collects and sends data to a large computer where analysis is done and graphical output is generated. The data collection hardware and software are described. Results are illustrated.