Maxwell’s Demon and counting

Posted by on Apr 18, 2013 in Blog, Numbers, Science | 0 comments

Maxwell’s Demon and counting

I have already written about Maxwell’s demon in a previous post some time back. Before going on with this post, unless you know the demon well, you should read that previous post. He is a most interesting wee beasty. In the early days of the demon, the notion was that he could decide which molecules had greater or lesser energy, and with this knowledge, decrease the entropy of the system by increasing the temperature of one side of the container and decreasing that of the other. By doing this without any expenditure of work, he violates the second law of thermodynamics. This operation...

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Maxwell’s Demon

Posted by on Dec 22, 2012 in Science | 0 comments

James Clerk Maxwell first wrote about his demon in 1871 in his book, Theory of Heat. The actual passage from the book has been quoted often enough that I will not repeat it once again here, but I’ll offer the basic original concept. Maxwell posits a volume containing a gas and which is divided into two halves, call them A and B. In the divider is a hole that can be opened or closed by some frictionless means. Now Maxwell imagines a being that can see individual molecules in the two halves of the volume and who can open and close the hole in the partition. When this being identifies a...

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