大学物理光学题目

2024-12-19 23:55:17
推荐回答(1个)
回答1:

λ/2 = 0.0025 θ
λ = 0.005 θ = 5*10^-7 [m]

n = λ0/λ = 7*10^-7 / 5*10^-7 = 1.4