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Pulfrich in 1889. Carl P. Pulfrich (September 24, 1858 in Burscheid, Rhine Province, Kingdom of Prussia – August 12, 1927 in Baltic Sea, drowned when his canoe capsized) was a German physicist, noted for advancements in optics made as a researcher for the Carl Zeiss company in Jena around 1880, and for documenting the Pulfrich effect, [1] a psycho-optical phenomenon that can be used to ...
In 1899, Carl Pulfrich at Carl Zeiss AG fabricated a practical stereoscopic rangefinder, [6] based on a patent of Hector Alexander de Grousilliers. [ 7 ] World War II -era rangefinders worked optically with two telescopes focused on the same target but a distance apart along a baseline.
In such cases, symptoms such as difficulties judging the paths of oncoming cars have been reported. The phenomenon is named for German physicist Carl Pulfrich, who first described it in 1922. [5] [6] Carl Pulfrich was the brother-in-law of Heinrich Hertz. [7] The effect has been exploited as the basis for some television, film, and game 3D ...
A stereoscopic rangefinder or stereoscopic telemeter [1] is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision. It looks similar to a coincidence rangefinder , which uses different principles and has only one eyepiece.
Mapped by the FIDS from photos taken by Hunting Aerosurveys Ltd. in 1956-57. Named by the UK-APC in 1960 for Arthur Freiherr von Hübl (1853-1932), Austrian surveyor, head of the topographic section of the Militargeographische Institut, Vienna, who in 1894 designed a stereocomparator which was developed independently by Doctor Carl Pulfrich in ...
Early in World War II, the range to the target was measured by optical rangefinders. Though some night operations were conducted using searchlights and star shells, in general optical rangefinders were limited to daytime operation. [10] During the latter part of World War II, radar was used to determine the range to the target.