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coherer

[ koh-heer-er, -her- ]

noun

  1. a person or thing that coheres.
  2. Radio. 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.


coherer

/ kəʊˈhɪərə /

noun

  1. physics an electrical component formerly used to detect radio waves, consisting of a tube containing loosely packed metal particles. The waves caused the particles to cohere, thereby changing the current through the circuit
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of coherer1

First recorded in 1890–95; cohere + -er 1
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Example Sentences

These, on reaching the torpedo, pass into the projecting wire and thence reach the coherer.

Reference has already been made to the original form of receiving apparatus called the Coherer.

One wire from the coherer is connected to the aerial and the other to the ground.

Suddenly there sounded the sharp click of the tapper as it struck the coherer.

The sensitive part of the Marconi receiving apparatus is the coherer.

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