Tossup

This process is caused by devices partially named “echelle,” which have relatively few lines per millimeter. Either prisms or devices named for this process (10[1])are used as dispersive elements in spectrometers. (-5[1])The first zero of the Bessel function J-sub-one equals the constant 1.22 in Rayleigh’s criterion for resolution limited by this process. (10[1])This (10[1])process’ intensity maxima occur when sine theta is proportional (10[1])to an integer multiple (10[1])of wavelength (-5[1])by Bragg’s Law. Tightly spaced slits make up gratings (10[1])named for this process, which light undergoes before self-interfering in the double slit (10[1])experiment. For 10 points, name this process in which light bends around an object. ■END■ (10[2])

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