Science Questions

Sat, 20th May 2006

Part of the show New Planets, Harmonics and the science of Sound.

Question

Suzie in Norwich asked:

What is ultrasound? Is it actually sound?

Answer

Ultrasound is sound but it's got such a high frequency that you can't hear it. It's so high and the wavelength's so small that you just can't hear it.

 

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