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A Hypersonic sound speed?

  1. Jan 2, 2018 #1
    Has anyone encountered the term "hypersonic sound speed" in connection with fluctuations of thermodynamic quantities in condensed matter? How is hypersonic different than regular sound?
  2. jcsd
  3. Jan 3, 2018 #2


    Staff: Mentor

    Hypersonic means it’s traveling faster than sound.
  4. Jan 3, 2018 #3


    User Avatar

    Staff: Mentor

    Much faster than sound.
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