Ronchi grating

Ronchi grating
дифракционная решётка Ронки

The New English-Russian Dictionary of Radio-electronics. . 2005.

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  • Ronchi test — In optical testing a Ronchi test is a method of determining the figure of a mirror used in telescopes and other optical devices.DescriptionDescribed in a 1922 published work by Italian physicist Vasco Ronchi, the Ronchi test is a variation of the …   Wikipedia

  • optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

  • Optical vortex — An optical vortex (also known as a screw dislocation or phase singularity) is a zero of an optical field, a point of zero intensity. Research into the properties of vortices has thrived since a comprehensive paper by Nye and Berry, in 1974,[1]… …   Wikipedia

  • Amateur telescope making — The field of amateur telescope making is considered an offshoot of the amateur astronomy community. Amateur telescope makers (sometimes called ATMs), as their name implies, are not paid professionals. They build their telescopes for the enjoyment …   Wikipedia

  • John August Anderson — (August 7, 1876 December 2, 1959), was an American astronomer. He was born in Rollag, a small community in Clay County, Minnesota to the south of Hawley. Anderson received his Ph.D. at Johns Hopkins University in 1907, and remained on the staff… …   Wikipedia


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