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Does QM break down at large scales?

  1. Mar 21, 2010 #1
    My friend and I were talking , and my friend said that the laws of QM break down at large scales , But i was thinking that they don’t break down the probabilities just become smaller and it becomes harder to use QM . So what do you guys think
  2. jcsd
  3. Mar 21, 2010 #2


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  4. Mar 21, 2010 #3
    As far as I know I would concur with your opinion. We all have heard sometime in our life that there's the possibility to pass through a wall, even though the probability is so small that the universe would reach the heat death before.

    I guess these kind of calculations are made according to the amount of particles in the body that has to pass through such a wall. So I would say that the bigger, the less unlikely to happen.
  5. Mar 21, 2010 #4
    i see , thanks for your answers
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