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how to derive diffraction grating formula. Also d is the distance between slits. This is the same as using Eq.
How To Derive The Intensity Formula Of A Diffraction Grating Physics Stack Exchange from physics.stackexchange.com
The nth order occurs when nlambdadsintheta differentiating this we get ndelta lambdaddelta theta costheta. The light from the diffraction grating is of width Wcostheta where theta is the angle to the normal that the nth order makes. This is the same as using Eq.
Then the height y up this screen is yLtanthLthLsinth and so 2p d l y L d 7 If the plane wave hits the grating straight on so d0 then IyI0 sin2 pN dy lL sin2 p dy lL 8.
145 Single-Slit Diffraction 14-13. Diffraction due to N-Slits Grating An arrangement consisting of large number of parallel slits of the same width and separated by equal opaque spaces is known as Diffraction grating. The nth order occurs when nlambdadsintheta differentiating this we get ndelta lambdaddelta theta costheta. Also their equation is a bit different.
