Diffraction on a Screw, 2 of 4

Diffraction on a Screw, 2 of 4

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This image is part of the sequence science and technology: light diffraction at different wavelengths

Credit: GIPHOTOSTOCK/SCIENCE PHOTO LIBRARY

Caption: Diffraction on a screw, Photo 2 of 4. Stylized photo. A small screw is placed in a beam produced by either a Helium-Neon laser operating at 632.8 nm (red, Photos 1 and 2) or a Helium-Neon laser operating at 543.4 nm (green, Photos 3 and 4). The resulting Fresnel diffraction patterns are observed at the same distance from the screw. Note that the fringe spacing is smaller for the green laser.

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Keywords: beam, demonstration, diffract, diffraction, education, educational, effect, experiment, fresnel, fringe, green, he, helium, interference, laser, light, monochromatic, ne, neon, optical, optics, phenomenon, physics, red, science, screw, sequence, visible

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