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decrepit said..
So can you polarise sound waves?
I doubt it.
No, because sound waves are a compression travelling through a medium. The wave propogates longitudinally to the direction the wave travels.
The polarise it the wave has to propogate transverse to travel direction.
Think of it like a wave travelling tthough a slit the width the the rope. If you lie a rope on the ground and wave it about left to right to make waves travel along it, then the waves it would pass though a horizontal slit, but not a vertical slit - and thus become polarised.
But if it was a compression wave travelling up and down the rope, along its length, then it would pass through the slit no matter the orientation.
I have no idea what gravity waves are. If they can be polarised then I assume something conceptually similar to an electro-magnetic wave, where the electro-part propogates along the megnetic-part and the magnetic part along the electro part, perpendicular to each other.
Presumably gravity is related to mass and space ?, can't propogate without them ?