Refraction occurs when sound waves travel through and medium and back.
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http://m.eet.com/media/1064485/sound5_fig1.15.jpg Sound wave through different media |
This is due to the differences in the speed of sound. Sound waves bend when parts of the wave front travel at dissimilar speeds.
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http://www.patana.ac.th/secondary/science/anrophysics/ntopic4/images/wavefront.gif Picture of a Wave Front |
Have you learnt new things?
Until next time!
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