我找了多資料 一個偏振光，能通過與它偏振方向一樣的偏振片 還是通過與它偏振方向垂直的偏振片 兩種說法都有文獻資料 =================================================================== 第一種說法是：偏光鏡能吸收和它狹縫方向相同的偏振光 也就是偏振光偏振方向 要和偏光鏡狹縫方向垂直(交於90度)才能通過 有維基百科的內容說明： "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." (這段文字右邊的圖解和我們一般的理解不同) (來源: http://en.wikipedia.org/wiki/Polarizer ) 引註文獻: Nanotechnology, 2005, 16(9), 1874–1877 ===================================================================== 第二種說法就是，偏光鏡能讓和它狹縫方向相同的偏振光通過 也就是偏振光偏振方向 要和偏光鏡狹縫方向平行(交於0度)才能通過 很多課本和科普書籍都這麼解釋 (例如《觀念物理IV》第72頁的圖解) 所以我現在有點不太清楚哪種說法才是正確的 一種是我們平常的理解，另一種是文獻資料和維基百科的背書 還有勞各位高手解答了 --

※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.113.77.205