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| Physics | |
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| Tweet Topic Started: Jan 14 2013, 04:26 AM (403 Views) | |
| Michelle | Jan 14 2013, 04:26 AM Post #1 |
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I hate it. But you can talk about it here. It's a bunch of *censored* to me. Like wtf is this. ![]() ![]() If anyone knows what that means, don't be afraid to tell me. |
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| Pyrite | Jan 14 2013, 11:55 AM Post #2 |
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Just as Planned
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I know the first one. That means that the change in entropy (or disorder) of a system approaches zero as the temperature approaches absolute zero (0 K or -273°C, not sure what that'd be in Farenheit). The third law of thermodynamics states that the entropy of a perfect crystal is zero at absolute zero (0 K). Substances that are not perfect crystals at absolute zero will have some entropy at that temperature. |
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| Michelle | Jan 14 2013, 08:14 PM Post #3 |
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Um what... |
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| Pyrite | Jan 14 2013, 08:21 PM Post #4 |
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Just as Planned
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I'll just break the equation down:![]() "lim" stands for the limit. "ΔS" stands for the change in entropy of the system (entropy is basically disorder) "T → 0" stands for "as T, the absolute temperature, reaches 0 K) So essentially, as the temperature tends to 0 K, the change in entropy of a system will approach zero, and the system will have a constant value of entropy (disorder). |
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| CJ | Jan 14 2013, 08:41 PM Post #5 |
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A very minor case of serious brain damage
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The second one is the time-dependent Schrödinger equation from quantum mechanics. Want me to try and explain the symbols? |
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| Michelle | Jan 14 2013, 08:56 PM Post #6 |
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Still don't get it... |
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| CJ | Jan 18 2013, 01:58 AM Post #7 |
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A very minor case of serious brain damage
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I'll see if I can explain what that equation is saying in plain English, then, without any symbols: 'Entropy' is basically a measure of how much 'order' there is in a system. If there's more entropy, the system is more disorderly and chaotic. The equation says that as the temperature drops towards absolute zero, the amount of entropy stays more or less the same. |
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8:35 AM Jul 11