What did Hertz use to detect electromagnetic waves?
Geiger counter
Electroscope
Radio receiver
Spark gap transmitter
Answer
Spark gap transmitter was the device used by Hertz to detect electromagnetic waves. It consisted of two metal spheres with a small gap between them. When a high voltage was applied to the spheres, a spark would jump across the gap, creating a brief burst of electromagnetic radiation. Hertz placed a receiver, consisting of a loop of wire connected to a spark gap, some distance away from the transmitter.
Mastering the Hertz: Unveiling the Legacy of Heinrich Hertz
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