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Good old Google has a bunch of definitions depending upon the system you are studying.
Entropy is the process of a system going from its present state to a less complex or less energetic state. For example going from hot to cold. That's just my simple take on it.
Pesonally, I really don't like definitions of entropy that rely upon 'information' because information is subjective. Anyone that has paid a lot of money for a Jackson Pollack original would certainly disagree with most of the 'information' based definitions of entropy.Entropy is the tendency of energy to run downhill; in practice, to equalise with a lower energy level.
However there is no need to talk about information, we can simply talk (at a very simple level) of 'state of more or less order'.
QuoteHowever there is no need to talk about information, we can simply talk (at a very simple level) of 'state of more or less order'.That's what I was referring to with the mention of Jackson Pollack. If we spill a can of paint on the floor most people would say it is less ordered, but if JP does so, it is apparently not.It's best to stick with energy based definitions of Entropy, imo.