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Is plasma less dense than vacuum?

  1. Sep 29, 2009 #1
    Water and glass are considered denser than vacuum for their dielectric coefficient is greater than the dielectric constant of vacuum. The plasma's dielectric constant is
    Does this mean that plasma can be considered less dense than vacuum?...

    thanks in advance.
  2. jcsd
  3. Sep 29, 2009 #2
    imho density is associated with mass per unit volume, so...by definition nothing can be less dense then vacuum. Maybe I'm not understanding what you mean...
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