"VWR"

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.

Vivid Illustration of Thermoexpansion.

Ideal for Individual Study

Sized For Student Use.

Employs Guericke’s Method for Demonstrating the Force of Atmospheric Pressure.

A new way to demonstrate thermal expansion in a metal.

Bring Some Heat Into the Classroom

The Student Double-Wall Calorimeter is an inexpensive necessity for your experiments.

Demonstrate the Force of Air Pressure Without a Vacuum Pump

The Student Coin and Feather Tube shows the two items in a vacuum, falling at the same rate.

This new conductivity bar set features sensitive liquid crystal temperature indicators, which are attached to the front of each of four metal bars.

Appropriate for grades 6 to 12 Brings the First Law of Thermodynamics to life! This pair of precision-machined, chrome-plated steel balls is actually a hands-on demonstration in energy transformation. By striking the balls together, you will create enough heat at the point of contact to burn a hole in a sheet of paper.

The Precision Linear Expansion Apparatus produces accurate determinations of the coefficient of expansion.

Students Can Simulate the Earliest Steam Engine.

This vacuum plate and pad are the perfect tools for vacuum experiments.

This unit visually reinforces heat conductivity lessons.