ch36-p047 - 47. The distance between adjacent rulings is d...

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47. The distance between adjacent rulings is d = 20.0 mm/6000 = 0.00333 mm = 3.33 µ m. (a) Let () sin 0, 1, 2, dm m θ =λ =±± . Since | m | λ / d > 1 for | m | 6, the largest value of corresponds to | m | = 5, which yields 11 5(0.589 m) sin | | / sin 62.1 3.33 m md −− ⎛⎞ = = ° ⎜⎟ ⎝⎠ (b) The second largest value of corresponds to | m | = 4, which yields
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