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Heat and Entropy

  1. Mar 18, 2004 #1
    Heat is the energy of random molecular motion. Does this mean then that atoms are constantly producing energy since the electrons are always moving? Or is it that there is potential energy stored in those electrons' motion? Would this be the energy of an atom bom?

    If entropy always increases, why is it that atoms continue this motion? Shouldn't it come to a halt? Speaking of which, is it known why electrons don't spiral into the nucleus?

  2. jcsd
  3. Mar 18, 2004 #2


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    I'm tempted to answer "because it doesn't" on that question, but I think that's not the answer you are looking for.=)
    The classical laws of physics doesn't hold for such small objects as atoms. It's a pure quantum mechanical phenomena.
  4. Mar 18, 2004 #3


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    Staff: Mentor

    Energy of motion is kinetic energy. If the atoms are in constant motion, they have constant kinetic energy.
    No, thats atomic energy (or to use the more modern and correct term, nuclear energy). Its the energy that binds the nucleus of an atom together.
    Newton's first law says no: once in motion, something stays in motion until you force it to stop. Entropy isn't really relevant to the question.
    Electrons don't orbit in the classical sense.
  5. Mar 18, 2004 #4


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    Re: Re: Heat and Entropy

    Except in the sense that anything with heat radiates that heat to its saroundings, losing energy and cooling, so the motion of the atoms slows contiuously unless more energy is put into the system. In that way, entropy does effect the system, slowing the atomic motion untill the temp of the odject matches the temp of the saroundings.
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