Big Idea: All matter is made of small particles and this can explain many of its properties. More info...
Class practical: Expansion of air at constant pressure and an indication of absolute zero (-273°C).
This episode looks at Brownian motion as evidence for the particulate nature of matter, and the macroscopic gas laws.
The attribution of the law relating gas pressure and volume to Boyle is contested and there are at least six other scientists...
Stories from Physics
Recognising and celebrating outstanding contributions to the field of physics education.