[請益] 光柵的波程差
有N個狹縫光柵 狹縫間距為d 求第一極小位置....
從普物書籍中看到 它的想法是類似單狹縫第一極小發生在
頂端和底部射線間的路程差λ之處
所以這邊類似單狹縫的求法它的式子 Ndsinθ=1λ
我的疑問是這邊既然是 " 頂端和底部射線間的路程差 "
那N個狹縫間距應為(N-1)d 頂端和底部射線間的路程差應為(N-1)dsinθ=1λ
為什麼它書上卻寫成 Ndsinθ=1λ?? @_@??
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