This process is caused by devices partially named “echelle,” which have relatively few lines per millimeter. (10[1])Either prisms or devices named (10[1])for this process (10[1])are used as (10[1])dispersive (10[2])elements (10[3])in (10[1])spectrometers. (10[6]-5[1])The first zero (10[2])of the Bessel (10[1])function (10[1])J-sub-one (10[1]-5[1])equals the constant (-5[1])1.22 in Rayleigh’s (-5[1])criterion (10[1])for (10[1]-5[1])resolution (10[2])limited (10[1])by this (10[1])process. (10[6]-5[1])This (10[1])process’ (10[3]-5[1])intensity maxima occur (10[2])when sine theta (-5[1])is proportional (10[4]-5[1])to an integer multiple (10[2])of wavelength (10[1]-5[1])by Bragg’s (10[1])Law. (10[7]-5[2])Tightly (10[1]-5[1])spaced slits (10[2])make (10[1])up (10[1])gratings (10[3])named for (10[2])this (-5[1])process, (10[6]-5[1])which (10[1])light (10[1])undergoes (10[1]-5[1])before (10[2]-5[1])self-interfering (10[6]-5[1])in the double slit (10[1])experiment. (10[1])For 10 points, (-5[1])name this process in which light bends (10[3]-5[2])around (-5[1])an object. (10[1]-5[2])■END■ (10[15]0[25])