Echoes Of My Time

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Echoes from a Time Passage

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You then measure the time for 11 claps, which is the time for 10 journeys by the sound. This time can then be used to calculate an average time for the sound to travel to the wall and back.


A data logger can measure and record the time taken for sound to reach two microphones. Unlike the clap-echo method, these can be quite close together. For example, two microphones are 3.

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The data logger recorded a time of 0. Sound travels faster through liquids and solids than it does through air and other gases. The table gives some examples. This is because the particles of gases are further apart than liquids and finally solids.

Sound waves move more slowly when particles are further apart. Bang Goes the Theory presenters Jem and Dallas use a m plastic tubing coiled to experience the speed of sound.