Think of a Number
7.7EndedFamilyKids

Think of a Number

A light-hearted exploration of maths and science, presented by Johnny Ball.

5. Hello Listeners

0.0Oct 8, 1980 · 30 min

Listening to loud sounds, soft sounds, old sounds and new sounds. Recording some of the first sounds. Investigating drums in the head. Transmitting sounds with a milk bottle and asking a machine to do the talking. Meanwhile sort this out 'ear: A record costs £2 plus half its price. How much does it cost ?