Diffraction Grating (SEM)

Diffraction Grating (SEM)

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Credit: Ted Kinsman/SCIENCE PHOTO LIBRARY

Caption: Scanning Electron Micrograph (SEM) of diffraction grating, an optical device consisting of a glass plate or a mirror with a large number of equidistant parallel lines or grooves on its surface; it is used to disperse a beam of light (or other electromagnetic radiation) into wavelengths to produce a spectrum. The spacing of the optical structure is 1.3 um peak to peak.

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Keywords: colour, constructive interference, destructive interference, diffract, diffraction, diffraction grating, dispersal, disperse, dispersive, electron micrograph, frequency, grating, imaging, light, micrograph, optical, optical device, optics, physics, scanning electron micrograph, science, sem, wave, wave interference, wave nature, wavelength

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