"Janitorial Supplies"

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.

High quality linear expansion apparatus to study thermal expansion.

Hands on demomstration showing the power of a vacuum.

Ball and Ring Apparatus demonstrates thermal expansion.

Accurately plot the thermal energy transferred by an aluminum bar.

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

A set to demonstrate the rise in temperature when a fixed mass of gas is compressed.