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Weightlessness and sound waves

  1. Oct 1, 2006 #1
    What are the effects of weightlessness on sound waves, if any?
    [Not talking about human hearing or ability to locate sound]
  2. jcsd
  3. Oct 6, 2006 #2
    No considerable effect, I would guess. In a room here on Earth, you can neglect the effect of gravity on atoms and molecules in the air, since the kinetic energy of the particles is so large. On a larger scale, gravity will lead to a pressure gradient and that will affect a soundwave, but not the mechanism of the propagating sound wave.
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