with Johnny Ball
A lighthearted exploration of science, technology and numbers. This week Johnny says Hello Listeners
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 - A record costs £2 plus half its price. How much does it cost?
Written by JOHNNY BALL
Executive producer CYNTHIA FELGATE Producer ALBERT BARBER BBC Bristol