马吕斯指出：强度为I(Ο)的线偏振光，透过检偏片后，透射光的强度（不考虑吸收）为I=I(Ο)cos²θ。(θ是入射线偏振光的光振动方向和偏振片偏振化方向之间的夹角。)
Finally Malus law and the polarized light interference are introduced.
最后介绍了与晶体双折射相关的马吕斯定律及偏振光的干涉。
参考来源 - 波片延迟量自动化测量系统的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
作为实例，用本仪器搭置了双光路系统，验证了马吕斯定律。
As an example, Malus law is proved experimentally with this instrument and its double bcams system.
实验中发现，透射光强曲线随着入射角的微小变化而偏离马吕斯定律，出现了周期性扰动。
It is found that the variation of the transmitted intensity with the rotation Angle deviates from Malus law, exhibiting a cyclic fluctuation with the rotation Angle.
应用推荐