The diffraction pattern far from the screen is just

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Unformatted text preview: pendicularly to a screen illuminates an aperture in the screen. The diffraction pattern far from the screen is just the Fourier transform of the function that describes the aperture. = sin , = = = − − + = 2 cos Maxima when + sin = Dirac delta function is an infinitely narrow pulse of infinite height that has an area of 1. − =1 + () + = 2 cos or 2 sin ≅ − = sin = ∝ cos =() + sin For an electromagnetic wave, the electric and magnetic fields are perpendicular to each other and to the direction of propagation. The p...
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