来自《耶鲁大学开放课程：新生有机化学 第4集 第4集》
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the question is, are molecules unobservably small for问题是对于牛顿所说的凡人之眼来说 -
what Newton called "Vulgar eyes"?分子真的是难以观察到的微小吗 -
Is there no way we can see是不是如果分子那样小 -
something and measure it if it's that small?我们就不能看到并测量呢 -
So consider water.考虑水的情形 -
A cubic centimeter of water is 1/18th of a mole,一立方厘米的水是18分之1摩尔 -
since the molecular weight is eighteen.水的分子质量为18 -
That means it's 6/18 times这意味着在1毫升水中含有 -
10^23 molecules, in a cc of water.18分之6乘以10的23次方个水分子 -
Now that's a really, really big number这是一个非常非常大的数值 -
and it sounds like they must be just impossibly small,并且听起来水分子必须是难以置信的小 -
hopeless to try to see such a thing.我们几乎不可能看见它