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He came up with the relationship that nu bar, which is called wave number --He found the reciprocal.
他也提出了它们与波数的关系，波数是波长的倒数。
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And if you go back to here and click on Archive Notes, it is the fourth button down that will take you to something that looks like this.
如果你们回到这来，点击存档笔记，是倒数第四个,你们会看到像这样的情况。
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V3 Here's the V4 over V3, V1 oops, sorry. V2 over V1, this is equal to the inverse of this.
所以就是这里的V4除以，哦，对不起，V2除以，它是它的倒数。
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Can I get the guy way back, like three rows behind you in purple?
请倒数第三排的紫衣人回答
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What he did was coined this. But he found that by taking the reciprocal of the wavelengths, you have four numbers, he took the reciprocals of those wavelengths and found that they fit a numerical sequence.
这些都是由他所做的一切得来的,但是他发现通过取波长的倒数，你有四个数字，他取了这些波长的倒数,发现它们构成了一个数列。
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if this is the case, of course, this is just the inverse of this.
如果这个成立，当然，它是它的倒数。
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So this just must be the inverse of this.
所以它也应该是它的倒数。
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