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The two counters consist of an electron counter and a photon counter that are placed in opposite sides from the beam. Due to the minimal energy of the recoil electron, the electron detection essentially occurs at their scattering site. Thus the scattering volume must be situated within the electron counter. [2]
LOPES (telescope) Coordinates: 49°05′57.8″N 8°26′14.7″E. The LOPES project (LOFAR PrototypE Station) was a cosmic ray detector array, located in Karlsruhe, Germany, and is operated in coincidence with an existing, well calibrated air shower experiment called KASCADE. In 2013, after approximately 10 years of measurements, LOPES was ...
Coincidence method. In particle physics, the coincidence method (or coincidence technique) is an experimental design through which particle detectors register two or more simultaneous measurements of a particular event through different interaction channels. Detection can be made by sensing the primary particle and/or through the detection of ...
The counters are surrounded by lead or steel shielding, to eliminate background radiation and to reduce the incidence of cosmic rays. In addition, anticoincidence detectors are used; these record events outside the counter and any event recorded simultaneously both inside and outside the counter is regarded as an extraneous event and ignored.
Cosmic string. Cosmic strings are hypothetical 1-dimensional topological defects which may have formed during a symmetry-breaking phase transition in the early universe when the topology of the vacuum manifold associated to this symmetry breaking was not simply connected. Their existence was first contemplated by the theoretical physicist Tom ...
Richard Joseph "Dick" Davisson (December 29, 1922 – June 15, 2004) was an American physicist . Davisson was the son of Clinton Davisson, a Nobel laureate, and his wife Charlotte. Davisson's maternal uncle, Sir Owen Richardson, was also a Nobel laureate. During World War II he worked on the Manhattan Project as part of the Special Engineer ...
A urine test strip or dipstick is a basic diagnostic tool used to determine pathological changes in a patient's urine in standard urinalysis. [1] A standard urine test strip may comprise up to 10 different chemical pads or reagents which react (change color) when immersed in, and then removed from, a urine sample.
Ranger 1. Ranger 1 was a prototype spacecraft launched as part of the Ranger program of uncrewed space missions. Its primary mission was to test the performance of those functions and parts necessary for carrying out subsequent lunar and planetary missions; a secondary objective was to study the nature of particles and fields in the space ...
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