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Unformatted text preview: Bright bands s The upper wave has to travel farther than the lower wave s The upper wave travels one wavelength farther s Therefore, the waves arrive in phase s Bright fringes occur when the path length differs by exactly m Quick Quiz What is the difference in path lengths for the dark bands? A.m B.(m+1) C.(m+) D.(m+) E.Can not be predicted...
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- Fall '09