Diffraction experiment, simulation

Diffraction experiment, simulation

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This image is part of the sequence science and technology: Interference diffraction pattern graphs

Credit: CHRISTIAN KOCH, MICROCHEMICALS/SCIENCE PHOTO LIBRARY

Caption: Diffraction experiment. Simulation showing the variation in the interference pattern produced by light waves passing through a multi-slit aperture. N is the number of slits and D is the distance between slits (3 micrometres). Three wavelengths of light in nanometres are used: 420 (blue), 532 (green), 633 (red). Diffraction causes the light waves to overlap, causing constructive and destructive interference. The intensity of the light is shown on a diffusing screen, and as a curve (white). N varies from 2 to 5 to 25 (top to bottom). As N increases, the interference maxima become sharper and overlapping mixes colours (yellow and pink).

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