Why is water said to be “incompressible” when sound can travel through it? Doesn’t sound imply compressions and rarefactions?
In: 93
Answer: it’s incompressible a bit like glass is incompressible. Still, glass propagates sound too. It’s because all materials really have the ability to propagate a change in the pressure on one side to the other side.
An experiment you can make: put a bar of steel on a table. Push it from one side. It moves from the other side too! The pressure of your hand propagated through the steel to the other side.
The water does this with sound too.
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