If we calculate the change in entropy during gas mixing, we will find that this quantity is positive.
如果我们计算气体混合过程中熵的变化，我们会发现这个量是正的。
And it's all driven by entropy.
都是由熵驱动的。
Yeah. What about entropy, right?
对，熵！熵起了什么作用？
All driven by entropy of mixing.
所有这些都是由混合熵引起的。
So that's our entropy of mixing.
那就是我们混合物的熵。
Just from the entropy of mixing.
因为混合熵。
You're not worried about entropy.
你不用担心熵。
They're in your notes for entropy.
它们在你们关于熵的笔记中。
是的，是熵，对吗？
但是熵也会起作用。
But what has that to do with entropy?
不过那跟熵有什么关系？
Do systems like to have more entropy?
对吗？体系是不是倾向于具有更多的熵？
That's entropy and the arrow of time.
这就是熵和时间之箭。
Let's now look at the entropy of mixing.
让我们来看看混合熵。
熵增加。
It's all entropy that's driving the mixture.
只有熵在驱动这个混合过程。
So entropy of mixing is really super important.
所以混合中的熵是非常重要的。
Any questions about these entropy driven cases?
关于这些熵驱动的例子有什么问题吗？
And in that case, the entropy is absolutely zero.
在这种情况下，熵为零。
Which is to say there's an entropy change in mixing.
那就是说，混合后有熵变。
That is, the entropy term, of course, is still there.
那就是，熵的项，当然，仍然存在。
Why was it in such a weird low-entropy unusual state?
为什么它处于这么奇怪的、低熵的、不寻常的状态？
And the entropy of mixing was really super important.
混合熵非常重要。
Why does not entropy of isolated system decrease?
为什么孤立系统的熵不会减少？
If you change the temperature entropy changes and so on.
如果你改变温度，熵也会变化。
This is the entropy, or disorder, arising from your search.
这就是由于你的搜索引发的熵，也就是无序状态。
Change in entropy is greater than zero for an isolated system.
对孤立系统，熵的变化是大于零的。
At this point, a new aeon with a low entropy state will begin.
如此，一个新的，低熵的宇宙便可能产生。
Well, in this simple model the entropy of the pure liquid is zero.
在这个简单的模型中，这个纯液体的熵是零。
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