Making Sound

Wed, Mar 01, 2017
Helen investigates how Big Ben creates pressure waves at particular frequencies, how soprano Lesley Garrett's singing voice works, the deep tones of a volcanic eruption and the sounds made by a black hole in space.
7.7 /10
Using Sound

Wed, Mar 08, 2017
Helen visits a hidden location in Scotland to experience some extreme acoustics. She discovers how sound diffracts and so helps us to sense danger and how our ears translate vibrations into electrical signals.
6.8 /10

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