我找了多资料 一个偏振光，能通过与它偏振方向一样的偏振片 还是通过与它偏振方向垂直的偏振片 两种说法都有文献资料 =================================================================== 第一种说法是：偏光镜能吸收和它狭缝方向相同的偏振光 也就是偏振光偏振方向 要和偏光镜狭缝方向垂直(交於90度)才能通过 有维基百科的内容说明： "For waves with electric fields perpendicular to the wires, the electrons cannot move very far across the width of each wire; therefore, little energy is lost or reflected, and the incident wave is able to travel through the grid. Since electric field components parallel to the wires are absorbed or reflected, the transmitted wave has an electric field purely in the direction perpendicular to the wires, and is thus linearly polarized. Note that the polarization direction is perpendicular to the wires; the notion that waves "slip through" the gaps between the wires is incorrect." (这段文字右边的图解和我们一般的理解不同) (来源: http://en.wikipedia.org/wiki/Polarizer ) 引注文献: Nanotechnology, 2005, 16(9), 1874–1877 ===================================================================== 第二种说法就是，偏光镜能让和它狭缝方向相同的偏振光通过 也就是偏振光偏振方向 要和偏光镜狭缝方向平行(交於0度)才能通过 很多课本和科普书籍都这麽解释 (例如《观念物理IV》第72页的图解) 所以我现在有点不太清楚哪种说法才是正确的 一种是我们平常的理解，另一种是文献资料和维基百科的背书 还有劳各位高手解答了 --

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