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Entropy and black holes - are they a 2nd law violation?

Black holes would seem to be a spontaneous process ( once initiated) that reduce the entropy both of itself (the system) and of it's surroundings.

This to my thinking would make them violate the 2nd law of thermodynamics in which in any spontaneous process the overall entropy is meant to increase.

The black hole is more ordered as it becomes a denser solid and the surroundings are more ordered as the gases are converted to the solid in a black hole.

Is there a flaw with my logic?

Thank you in advance

2 Answers

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  • ?
    Lv 4
    10 years ago
    Favorite Answer

    1. In nature isolated systems tend to disorder, but if the highest point of disorder is reached the system again tends towards order (imagine you make a wild party, louder and louder and like a madman you start to throw things around. Neighbors would call the police and order would be established again: every war has an end). 2. The laws of thermodynamics are only valuable for closed and isolated system and the universe is most likely not a closed system. Anything goes.

  • Yes. The Second Law means that the entropy of the Universe as a whole increases, there can be, and usually are, local decreases in entropy, but the net entropy of the Universe increases.

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