So, if you were to look at two kitchens - one very large and stocked to the gills but meticulously clean, and another that's smaller with less stuff in it, but pretty trashed out by chimps already - it's tempting to say the messier room has more entropy, but that's not necessarily the case. Of course, the entropy depends on a lot of factors: how many chimpanzees there are, how much stuff is being stored in the kitchen and how big the kitchen is. It has more to do with how many possible permutations of mess can be made in that kitchen rather than how big a mess is possible. However, entropy doesn't have to do with the type of disorder you think of when you lock a bunch of chimpanzees in a kitchen. #Andy toy story 3 fullIt's harder than you'd think to find a system that doesn't let energy out or in - our universe is as good an example of one as we have - but entropy describes how disorder happens in a system as large as the universe or as small as a thermos full of coffee. Because the measure of entropy is based on probabilities, it is, of course, possible for the entropy to decrease in a system on occasion, but that's statistically very unlikely. According to the second law, entropy in a system almost always increases over time - you can do work to create order in a system, but even the work that's put into reordering increases disorder as a byproduct - usually in the form of heat. "It is one of the most important laws in nature."Įntropy is a measure of the disorder in a closed system. "The second law of thermodynamics is called the entropy law," Marko Popovic, a postdoctoral researcher in Biothermodynamics in the School of Life Sciences at the Technical University of Munich, told us in an email. The world turns and energy becomes less organized. A battery turns chemical energy into electrical energy. However, the energy constantly changes forms - a fire can turn chemical energy from a plant into thermal and electromagnetic energy. The first law of thermodynamics has to do with the conservation of energy - you probably remember hearing before that the energy in a closed system remains constant ("energy can neither be created nor destroyed"), unless it's tampered with from the outside.
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