p36_074 - 74. Using the relations of §36-7, we find that...

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Unformatted text preview: 74. Using the relations of §36-7, we find that the (vertical) change between the center of one dark band and the next is ∆y = λ2 = 2.5 × 10−4 mm . Thus, with the (horizontal) separation of dark bands given by ∆x = 1.2 mm, we have θ ≈ tan θ = ∆y = 2.08 × 10−4 rad . ∆x Converting this angle into degrees, we arrive at θ = 0.012◦ . ...
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