Posted: May 10, 2012 by Wildcat in Uncategorized
Tags: , , , ,

Entropy. A subject that comes back again and again and again and again and again in this blog. And so does the question in my inbox: “what exactly is entropy?” On the internet you can find a plethora of answers to this question. The quality of the answers ranges from ‘plain nonsense’ to ‘almost right’. The correct definition of entropy is the one given in a previous blog: “the entropy of a physical system is the minimum number of bits you need to fully describe the detailed state of the system” So forget about statements like “entropy is disorder”, “entropy measures randomness” and all vagaries about “teenage bedrooms getting messy” that inundate the internet. These qualitative statements at best provide you with metaphors, and at worst create profound misunderstandings. (via What Is Entropy?)

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