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Stereoscopic rangefinder atop the bridge of the German cruiser Admiral Graf Spee Portable stereoscopic rangefinder with binoculars from WWII. 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.
Eyepiece image of a naval rangefinder, showing the displaced image when not yet adjusted for range. The coincidence rangefinder uses a single eyepiece. Light from the target enters the rangefinder through two windows located at either end of the instrument. At either side the incident beam is reflected to the center of the optical bar by a ...
Rangefinder salvaged from the German cruiser Admiral Graf Spee on display in Montevideo The first rangefinder telemeter was invented by James Watt in 1769 and put to use in 1771 in surveying canals. Watt called his instrument a micrometer, a term now used with a different meaning in engineering (the micrometer screw gauge ).
This page contains a list of equipment used the German military of World War II.Germany used a number of type designations for their weapons. In some cases, the type designation and series number (i.e. FlaK 30) are sufficient to identify a system, but occasionally multiple systems of the same type are developed at the same time and share a partial designation.
The idea was to prevent Allied fighters attacking the German fighters from behind. Neptun 1 - FuG 216: A small number of experimental sets fitted to Fw 190 and Bf 109. Wavelength 1.3 to 1.8 meters. Neptun 2 - FuG 217: A small number of sets fitted to Fw 190 and Bf 109. 1.6 to 1.8 meters wavelength. Some had a rear warning component.
Radar in World War II greatly influenced many important aspects of the conflict. [1] This revolutionary new technology of radio-based detection and tracking was used by both the Allies and Axis powers in World War II , which had evolved independently in a number of nations during the mid 1930s. [ 2 ]
A number of transmitters, from Lossiemouth to Manston in Kent transmitted on slightly different frequencies transmitted a narrow beam across the North Sea using a S.B.A. (Standard Beam Approach) transmitter, receivers for-which were fitted to all British bombers and could be received over a range of 350 miles at 10,000 feet. Once a bomber found ...
The German FuG 10 panel, or rack, contained two transmitters and two receivers: One transmitter and its companion receiver operated in the MF or Longwave; 300 to 600 kHz (1,000 to 500 m) range and the other transmitter and its companion receiver operated in the HF or Shortwave range; 3 to 6 MHz (100 to 50 m). Most of the FuG 10 series used a ...