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Heat equation in real life

  1. Oct 13, 2012 #1

    lavinia

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    The heat equation predicts that heat spreads infinitely far over arbitrarily small time intervals. What happens in real life? How does the heat equation get modified?
     
  2. jcsd
  3. Oct 13, 2012 #2
    In the real (classical) world, you have to take into account relativity, which can be done by a well defined way of "upgrading" a Galileo-invariant equation to a corresponding Lorentz-invariant one. There is a relevant Wikipedia article you can read here: http://en.wikipedia.org/wiki/Relativistic_heat_conduction
     
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