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Michael Pentz introduces the unit. Russell Stannard introduces his discussion on P and S waves in earthquakes with a brief definition of the two kinds of waves (compressional and transverse waves).... Ian Gass discusses the effect of P and S waves on the earth.
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video preview image for The nature of P and S waves The nature of P and S wavesA physical demonstration of the nature of P and S waves is followed by a discussion and...28 June 1971