熵
1、物理名词,用温度除热量所得的商,标志热量转化为功的程度。
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。
If we calculate the change in entropy during gas mixing, we will find that this quantity is positive.
现在的研究采用了复杂性分析中的样品熵算法。
The present study is to investigate the application of sample entropy (SampEn) measures.
提出了基于最大互信息熵且具有奇数约束的优化得分函数。
A score function for optimization based on maximum mutual information entropy with odditional restriction is proposed.
所以混合中的熵是非常重要的。
So entropy of mixing is really super important.
那就是,熵的项,当然,仍然存在。
That is, the entropy term, of course, is still there.
如果你改变温度,熵也会变化。
If you change the temperature entropy changes and so on.
这些的基本原因都是熵的混合。
And it's all driven by entropy of mixing.
所有这些都是由混合熵引起的。
All driven by entropy of mixing.
它们在你们关于熵的笔记中。
They're in your notes for entropy.
你有一块晶体,它的熵很低。
You have a crystal, entropy's very small.
但是当然,熵使,它们混合。
But of course, entropy is going to want them to mix.
这样我们能更明确地,计算混合后的熵。
So we can just explicitly calculate the entropy of mixing.
没有混合熵,我们得到的就是这条曲线。
Without entropy of mixing, we would be sitting on this curve here.
如果没有混合熵,那么就是从这里开始。
If entropy of mixing wasn't there, I would start from up here.
魔幻词汇是什么?混合熵。
What's the magic word? Entropy of mixing, right.
那就是我们混合物的熵。
So that's our entropy of mixing.
熵是指物体失序的趋势。
Entropy is the tendency of things to disorder.
不过那跟熵有什么关系?
But what has that to do with entropy?
只从熵的项,你会使细胞爆裂或无论做什么。
Just from the entropy term you would burst the cell or do whatever.
没有混合熵的话,所有的东西都会变成产物。
Without entropy of mixing, then everything would go directly to the products.
这样是我们初始的熵。
So that's our initial entropy.
这就是熵和时间之箭。
That's entropy and the arrow of time.
继续得到宏观的熵变。
And continue to derive the macroscopic entropy changes.
但是熵也会起作用。
But entropy also matters.
是的,是熵,对吗?
Yeah, it's entropy, right?
对,熵!熵起了什么作用?
Yeah. What about entropy, right?
都是由熵驱动的。
And it's all driven by entropy.
我们知道它是由熵驱动的。
And we know it's entropically driven.
同样的,它仍是熵驱动的。
And again, it's still entropically driven.
同样的,它仍是熵驱动的。
And again, it's still entropically driven.