What was used to detect the radio waves?

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(A) In the early experiments of radio communication,specifically those conducted by Jagadish Chandra Bose and Guglielmo Marconi,a $Coherer$ was used a

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Coherer

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(A) In the early experiments of radio communication,specifically those conducted by Jagadish Chandra Bose and Guglielmo Marconi,a $Coherer$ was used as a detector for radio waves. $A$ $Coherer$ consists of a tube filled with metal filings that change their electrical resistance when exposed to electromagnetic waves,allowing the detection of the signal.

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