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Sounds in Bones   Many people think that sound will only pass through air. In fact it can be transmitted via solids such as concrete or liquid such as water - hence the echo finding methods of submarines where ‘pings’ of sound are sent out and bounce back from other solid objects. ‘Sound through your head’ is the name of an exhibit at London’s Science Museum. When visitors lightly bite onto a vibrating rod, they ‘hear’ sound because it is transmitted through the bone of their heads.

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Friday 18 May, 2012

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