"Dessus de bouchon"

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

Demonstrate the Force of Air Pressure Without a Vacuum Pump

Ideal for demonstrating that vapor pressure increases when temperature increases.

Understand Color and Heat Absorption.

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.