What is colour?

A photographer explains how he uses his knowledge of light and colour in his profession.

What are light waves?

A visual explanation of light waves.

What are sound waves?

A visual explanation of sound waves.

How to measure the speed of sound

A simple, step-by-step, visual guide showing you how to measure the speed of sound.

How to play a record with a £5 note

A simple, step-by-step, visual guide showing you how to play a record with a £5 note.

How to make a loudspeaker

A simple, step-by-step, visual guide showing you how to make a speaker from wire, a cup and a magnet.

9 class clips

We have a selection of great videos for use in the classroom