"Ward's Phenomena"

Metal cylinder set for demonstrating density investigation and specific heat experiments.

Radiometer with four lightweight metal arms.

This working model thermostat will demonstrate how differential expansion is used to control temperature. A bimetallic strip is used to open or close an electric circuit when temperature changes. The contacts will carry about three amperes. The unit can be operated with a 6 V lantern battery, low voltage power supply, or a blow dryer. Mounted on a metal base; approximately 15 cm high.

Great Intro For Solar Energy!

Demonstrate transformations of energy - thermal, electric, and kinetic - with this amazing device.