• 2022-05-30
    ‌用λ=4500Å的单色光垂直照射牛顿环装置时,第四级暗环对应的空气膜厚度为 [ ] ‍
    A: [img=59x22]180333f776a3916.png[/img]
    B: [img=59x22]180333f77f6bba3.png[/img]
    C: [img=50x22]180333f78791987.png[/img]
    D: [img=50x22]180333f791e9eb0.png[/img]