1) Kind of radio receiver 2) Primitive radio receiver 3) Radio electronic
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https://www.crosswordclues.com/clue/coherer
The coherer is a primitive form of radio signal detector used in the first radio receivers during the wireless telegraphy era at the beginning of the 20th century. Invented around 1884 by Italian physicist, Temistocle Calzecchi-Onesti, it consists of a tube or capsule containing two electrodes spaced a small distance apart, with metal filings in t...
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http://en.wikipedia.org/wiki/Coherer
• (n.) Any device in which an imperfectly conducting contact between pieces of metal or other conductors loosely resting against each other is materially improved in conductivity by the influence of Hertzian waves; -- so called by Sir O. J. Lodge in 1894 on the assumption that the impact of the electic waves caused the loosely connected parts ...
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http://thinkexist.com/dictionary/meaning/coherer/
(from the article `radio`) ...from Poldhu, Cornwall, to St. John`s, Newfoundland, a distance of nearly 2,000 miles (3,200 kilometres). For this distance, Marconi replaced the ... [3 related articles]
Found on
http://www.britannica.com/eb/a-z/c/106
Co·her'er noun (Electricity) Any device in which an imperfectly conducting contact between pieces of metal or other conductors loosely resting against each other is materially improved in conductivity by the influence of Hertzian waves; -- so called by Sir O. J. Lodge in 1894 on the assumption that...
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http://www.encyclo.co.uk/webster/C/106
An early form of signal detector in wireless telegraphy, based around the effect that small particles of metal filings stick together (or ‘cohere`) when an electric field is present. A coherer circuit consisted of a basic electromagnetic wave detector for various wavelengths and a circuit that obtained signals from modulated radio waves. The...
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https://www.encyclo.co.uk/local/20820
a person or thing that coheres. · a device usually used in detecting radio waves, as a tube filled with a conducting substance in granular form, whose electrical resistance increases when struck by radio waves.
Found on
https://www.infoplease.com/dictionary/coherer
No exact match found.
