A method for proving crystal birefringence is presented. Thepolarization state of monochromatic plane electromagnetic wave is obtained for intermediate category.
给出了一种证明晶体双折射的方法，并求得单色平面电磁波在中级晶体中的偏振态。
The refractive indices at 12 wave lengths in the visible region were measured with the minimum deviation method, showing that KABO is a negative uniaxial optical crystal with moderate birefringence.
用最小偏离法测试了可见光区十二个波段处的晶体折射率，结果表明KABO晶体属负单轴晶，具有适中的双折射率。
Moreover, the drift was more obvious when the variation of temperature was larger because of the variation of thickness and birefringence of the wave-plate varying with temperature.
然后从理论上分析是由波片的厚度和双折射率受温度影响而引起的。
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