Its request for monochromaticity of source is low. The equipments and procedure of this method are simple, but suitable for quarter-wave plates of various wave lengths.
此方法对光源的单色性要求低，新需器材及实验方法简便，并且适于各种波长的四分之一波片。
Fundamentals of various quarter wave plates are presented firstly in this paper.
概括介绍了各种四分之一波片的基本原理。
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