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Definition of Coherer
1. 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 to cohere, or weld together, a condition easily destroyed by tapping. A common form of coherer as used in wireless telegraphy consists of a tube containing filings (usually a pinch of nickel and silver filings in equal parts) between terminal wires or plugs (called
Definition of Coherer
1. Noun. (physics) A detector of radio waves used in very early radio receivers ¹
¹ Source: wiktionary.com
Definition of Coherer
1. a device used to detect radio waves [n -S]
Lexicographical Neighbors of Coherer
Literary usage of Coherer
Below you will find example usage of this term as found in modern and/or classical literature:
1. Report of the Annual Meeting (1901)
"D. When a coherer is placed in circuit with a battery, ... Let AB be the coherer
and C the battery, then the PD between A and B isequal to tho EMF of 0. ..."
2. Proceedings of the American Association for the Advancement of Science (1899)
"Now we can regard the coherer with this vertical wire and earth connection, as
it is used by Marconi, as part of the discharged circuit of a condenser whose ..."
3. Wireless Telegraphy by Jonathan Adolf Wilhelm Zenneck (1915)
"Recording Apparatus for the Metallic Granular coherer.—The recording devices
described in what has preceded, suffice for wave indicators which arc ..."
4. Wireless Telegraphy: Its History, Theory and Practice by Archie Frederick Collins (1905)
"146, was designed so that the filings in the coherer pocket could be changed,
diminished or increased, after the air was exhausted from the tube. ..."
5. Summarized Proceedings ... and a Directory of Members by American Association for the Advancement of Science (1899)
"The potential difference on opposite sides of the coherer must be an inverse
function of the distance between sending and receiving stations ; if this ..."
6. The Proceedings of the Iowa Academy of Science by Iowa Academy of Science (1903)
"rith the coherer through wires supported independently, lipping one into a mercury
cup on the base of the coherer, the second into the vessel of mercury in ..."
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