This can be used to show the forces exerted by atmospheric pressure.

A light walled tinplate can with an air-tight neck and screw cap. A small quantity of water in the can is boiled vigorously until steam occupies the space inside the can; at which point the top is screwed down tightly and the heat source removed. As the can cools down; atmospheric pressure is increasingly exerted until the can noisily collapses.

• Dimensions: (H)260mm x (D)75mm