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diffraction by rectangular aperture

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  • Fourier optics — is the study of classical optics using techniques involving Fourier transforms and can be seen as an extension of the Huygens Fresnel principle. The underlying theorem that light waves can be described as made up of sinusoidal waves, in a manner… …   Wikipedia

  • Horn antenna — Pyramidal microwave horn antenna, with a bandwidth of 0.8 to 18 GHz. A coaxial cable feedline attaches to the connector visible at top. This type is called a ridged horn; the curving fins visible inside the mouth of the horn increase the antenna… …   Wikipedia

  • Squircle — is a portmanteau word used to refer to a mathematical shape with properties between those of a square and those of a circle. It is a special case of superellipse.EquationIn a Cartesian coordinate system, the squircle centered on the point ( a , b …   Wikipedia

  • Optical microscope — Microscope Uses Small sample observation Notable experiments Discovery of cells Inventor Hans Lippershey Zacharias Jans …   Wikipedia

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  • eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

  • Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …   Wikipedia

  • Photographic filter — Four photographic filters. Clockwise, from top left, an infrared hot mirror filter, a polarising filter, and a UV filter. The larger filter is a polariser for Cokin style filter mounts. In photography and videography, a filter is a camera… …   Wikipedia

  • Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …   Wikipedia

  • Infrared photography — Top: tree photographed in the near infrared range. Bottom: same tree in the visible part of the spectrum …   Wikipedia

  • Confocal microscopy — Diagnostics MeSH D018613 OPS 301 code 3 301 …   Wikipedia

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