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Sound and Light

This short film follows Martin Archer, from Imperial College, as he explores how to increase a child’s understanding of sound through a visual demonstration of a sound wave. He explains how a Rubens Tube can be used to show a sound wave by passing sound through a metal tube full of gas. The top of the tube has tiny holes along it, through which the gas escapes. When lit the flame length varies showing the compressions and rarefactions of the sound wave.

This resource has been provided by Reach Out CPD, the programme was developed by Imperial College London in partnership with Tigtag.

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