It’s pretty easy to believe that solids and liquids are made up of atoms and molecules, but it may be harder to accept that air is also made of these tiny particles. A good example that shows that air ...

Three students try out hands-on experiments with carbon dioxide in a science lab. With the help of Dr Peter Wothers at the University of Cambridge, they explore the properties of the air around us.

1640: Gaspar Berti, through an inventive experiment with a lead tube and bucket of water, demonstrates how an air vacuum can be created. 1643: Evangelista Torricelli conducts Berti's experiment ...