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Beamed Voices interactive, Science Museum, London, 1992.

 
Beamed Voices interactive, Science Museum, London, 1992.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Description

This exhibit uses no special equipment and your voice is not amplified: the effect is caused by the precise shape of the dishes which reflect and concentrate your voice so that it can be 'beamed' acros a crowded room and heard on the other side. The curve of the dishes is part of a shape called a parabola. A parabola reflects soundwaves - or any other waves - in a special way.

Image Details

Image Ref.
 
10303825

© Science Museum / Science & Society Picture Library

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