CHRISTIAN KOCH, MICROCHEMICALS / SCIENCE PHOTO LIBRARY CHRISTIAN KOCH, MICROCHEMICALS / SCIENCE PHOTO LIBRARY
Diffraction experiment. Numerical simulation of the interference pattern produced by single-slit diffraction of a harmonic wave front. The wave moves from upper right to lower left in each image. The sequence starts at upper left and finishes at lower right. Here, the slit is far wider than the incident wavelength, causing 'shadows' and beam-like features to appear. This simulation is shown as waves moving across a surface, but is based on the differential equations that describe dispersion-free electromagnetic waves. See C014/7201 to C014/7204 for images showing how the pattern changes with wavelength size.
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