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光的波长是怎么测得的
更新时间: 2020-08-15 00:00:00  

光通过玻璃后在上表面形成反射,反射光我们称为光线1,透射光我们称为光线2,光线2通过玻璃玻璃后在下表面再次形成反射光3和透射4,那么光线3反射回上表面又形成一次反射和透射,我们把反射光定义为光线5,透射光定义为光线6,那么光线6和光线1会在玻璃上表面形成干涉,我们利用玻璃厚度,玻璃的折射率,以及干涉条纹的间距,可以算出此光波的波长。

关键词: 波长 怎么

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