来自《耶鲁大学开放课程：基础物理 第7集 第7集》

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  It had exactly this form
  它正是这种形式
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  but this was just not simply a constant you put in;
  但这不只是一个简单的恒数
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  it involved π and the electric charge
  它包含了 π 电子电荷
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  and Planck's Constant and everything.
  普朗克常数等等
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  So, Balmer did for Bohr what Kepler did for Newton,
  巴尔莫对波尔正如开普勒对牛顿
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  which is to condense a complicated data into some simple form
  把复杂的数据总结为简单的形式
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  so that theorists can have a go at it.
  理论物理学家可以由此起步
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  Then once you got the right answer
  一旦得到正确结果
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  it's really beautiful how everything fits.
  会发现这一切是多么完美的契合
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  We know this is right.
  我们知道这是对的
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  Okay, this is called a theory.
  这被称为一种理论
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  By the time physicists will call something a theory,
  一旦物理学家称什么为理论