Fil%3AHertzian_spark_radio_transmitter_1902.jpg

Fil:Hertzian spark radio transmitter 1902.jpg

Telegraph key 468 99 118 127 637 453 Antenna plate 184 104 125 128 637 453 Antenna plate English Early experimental Hertzian spark radio transmitter from 1902...

Fil:Attempt to use human brain to receive radio waves.jpg

English Experiment in 1902 by A. F. Collins to determine if a human brain can receive radio waves Italian Esperimento condotto nel 1902 da A. F. Collins,...

2 Resultater fundet for "Fil:Hertzian_spark_radio_transmitter_1902.jpg".

Fil:Hertzian spark radio transmitter 1902.jpg

Fil:Attempt to use human brain to receive radio waves.jpg

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