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Earthquake response in trains (lemmy.world)

submitted 9 months ago by nifty to c/japanesetrains

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[–] civylw 3 points 9 months ago

There are two types of seismic waves, primary waves and secondary waves. Primary waves, also known as P waves or pressure waves, are longitudinal compression waves similar to the motion of a slinky. Secondary waves, or S waves, are slower than P waves. S waves are the destructive ones.

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