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| Keywords: Brockhaus-Efron Oscillation 2.jpg Иллюст ация к статье Элект ические колебания из энциклопедии Б окгауза и Еф она Micrometer spark gap detector used by German physicist Heinrich Hertz in his historic 1889 experiments in which he demonstrated the existence of radio waves It consisted of a loop antenna consisting of a loop of wire with a spark gap that could be finely adjusted with a thumbscrew With this he detected radio waves in the UHF range from a spark gap transmitter From article Electric Oscillations in Brockhaus and Efron encyclopedia http //dic academic ru/dic nsf/brokgauz_efron/146322 ~ 1905 Б окгауз и Еф он PD-Brockhaus Efron Heinrich Rudolf Hertz History of radio Coherers Category Spark-gap transmitters | ||||
