※ [本文转录自 Grad-ProbAsk 看板 #1C570LF7 ] 作者: sancra (Lab Pub Orz...) 看板: Grad-ProbAsk 标题: [理工] [物理] 光波干涉 时间: Sun Jun 13 13:43:46 2010 题目 As the spacing of the slits in a two-slit interference experment with a fixed wavelength increases, the angle at which the first-order bright fringe occurs (a) increases (b) decreases (c) remains the same 答案是(a) increases 可是根据题目的说法 dsinθ=mλ d increases m the same λthe same 那sinθ要 decreases 所以angle应该要 decreases才对阿 为什麽答案是(a)?? --

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