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The '''Second Law of Thermodynamics''' is a fundamental truth about the tendency towards disorder in the absence of intelligent intervention.  This principle correctly predicts that heat will never flow from a cold body to a warmer one, unless forced to do so by a man-made machine.  Or, as [[Isaac Asimov]] observed, "[t]he universe is constantly getting more disorderly."<ref>Isaac Asimov continued to explain that "[v]iewed that way, we can see the second law all about us.  We have to [[work]] to straighten a room, and when left to itself it becomes a mess again very quickly and very easily.  Even if we never enter it, it becomes dusty and musty.  How difficult to maintain houses, and machinery, and our bodies in perfect working order: how easy to let them deteriorate.  In fact, all we have to do is nothing, and everything deteriorates, collapses, breaks down, wears out, all by itself -- and that is what the second law is all about.” Isaac Asimov, Smithsonian Institute Journal, June 1970, p. 6.  Put in physics terminology, the Second Law states that the [[entropy]] of an isolated or [[closed system]] never decreases.</ref>

The '''Second Law of Thermodynamics''' is a fundamental truth about the tendency towards disorder in the absence of intelligent intervention.  This principle correctly predicts that heat will never flow from a cold body to a warmer one, unless forced to do so by a man-made machine.  Or, as [[Isaac Asimov]] observed, "[t]he universe is constantly getting more disorderly."<ref>Isaac Asimov continued to explain that "[v]iewed that way, we can see the second law all about us.  We have to [[work]] to straighten a room, and when left to itself it becomes a mess again very quickly and very easily.  Even if we never enter it, it becomes dusty and musty.  How difficult to maintain houses, and machinery, and our bodies in perfect working order: how easy to let them deteriorate.  In fact, all we have to do is nothing, and everything deteriorates, collapses, breaks down, wears out, all by itself -- and that is what the second law is all about.” Isaac Asimov, Smithsonian Institute Journal, June 1970, p. 6.  Put in physics terminology, the Second Law states that the [[entropy]] of an isolated or [[closed system]] never decreases.</ref>

The Second Law of Thermodynamics is the result of the intrinsic uncertainty in nature, manifest in that einstein lameass theorem [[quantum mechanics]], which is overcome only by intelligent intervention.

The Second Law of Thermodynamics is the result of the intrinsic uncertainty in nature, manifest in [[quantum mechanics]], which is overcome only by intelligent intervention.

This law makes it nearly impossible to build a [[perpetual motion machine]] - the increase in entropy probably derails the system even if energy remains constant.

This law makes it impossible to build a [[perpetual motion machine]] - the increase in entropy inevitably derails the system even if energy remains constant.

The Second Law of Thermodynamics disproves the [[atheistic]] [[Theory of Evolution]] and [[Theory of Relativity]], both of which deny a fundamental uncertainty to the physical world that leads to increasing disorder.

The Second Law of Thermodynamics disproves the [[atheistic]] [[Theory of Evolution]] and [[Theory of Relativity]], both of which deny a fundamental uncertainty to the physical world that leads to increasing disorder.

To see this divide a container two and suppose that 1 half contains 20 molecules and the other none. What we expect to happen is for the molecules to spread out and have roughly half (10) in each half of the container. We can calculate the number of micro-states, <math>w</math>, which correspond to each macro-state:

To see this divide a container two and suppose that 1 half contains 20 molecules and the other none. What we expect to happen is for the molecules to spread out and have roughly half (10) in each half of the container. We can calculate the number of micro-states, <math>w</math>, which correspond to each macro-state:

 

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