ch36-p048 - 48. We note that the central diffraction...

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Unformatted text preview: 48. We note that the central diffraction envelope contains the central bright interference fringe (corresponding to m = 0 in Eq. 36-25) plus ten on either side of it. Since the eleventh order bright interference fringe is not seen in the central envelope, then we conclude the first diffraction minimum (satisfying sinθ = λ/a) coincides with the m = 11 instantiation of Eq. 36-25: 11 λ mλ d= = = 11 a . sin θ λ/ a Thus, the ratio d/a is equal to 11. ...
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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