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That is not a valid assumption for low frequency sounds. For high frequency sounds it's probably a valid assumption.
Originally posted by Kali74
reply to post by Arbitrageur
I'm assuming the ones that sound like they are coming from the sky do.
Originally posted by St Udio
from the OP link
to my knowledge gravity does not come in waves ...except in the star-trek series
There is single EM frequency which our eyes and brains see as 'yellow'. I can generate this response in your brain with that frequency or by a mix of others (like red and green). The point of 'there is no Pink' is that there is no single frequency of light that your brain will see as pink (or Magenta for that matter).