So you might ask well, why are we using this model if it clearly doesn't take into account quantum mechanics?

那么大家可能会问为什么我们要用这个,显然没有考虑量子力学的模型呢？

麻省理工公开课 - 化学原理课程节选

So, I said I'd tell you a little bit more about where this Bohr radius came from, and it came from a model of the atom that pre-dated quantum mechanics, and Neils Bohr is who came up with the idea of the Bohr radius, and here is hanging out with Einstein, he had pretty good company that he kept.

我要告诉你们,波尔半径是从哪里来的,它起源于前量子力学时代的，原子模型,尼尔斯，玻尔提出了，波尔半径的概念,这是他和爱因斯坦在一起，他们是好朋友，当我们讨论这个原子模型时你们要记住的是，在1911年。

麻省理工公开课 - 化学原理课程节选

Anyone with a late-model car might be underwhelmed by this news, since for years now mechanics have been plugging into computers to assess the condition of automobile engines.

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