engines

Text and line drawings examine the parts of an engine and how they work.

Examines how machines touch and shape our daily lives. Includes colorful images and hands-on activities.

A general discussion of engines and their history with emphasis on the Wankel rotary engine and its many advantages.

Discusses different kinds of machines, from digital thermometers and jet engines to elevators and microwave ovens, describing how they work and how they are used.