Vacuum Lines
You push a lever on your remote, and your remote control plane veers to the left. Jagdish Chandra Bose in 1894 used electromganetic waves to ignite gun powder and strike a gong in Calcutta (Now Kolkatta) in India. Whoever it was, hte truth stands is that it was oen of the finest inventions in the history of science. Radio signals were originally produced by spark transmitters, which were onisy and inefficinet. The invention of vacuum-tude diodes and triodes revolutionized the radio transmission and receivers. Then, AT&T used the vacuum tubes to transimt voices over phone lines and thsi lead to the experimentign of speeches over long distances for audiecne to hear over loudspeakers. There have eben constant innovations ni the field of radio broadcasting with the laetst craze being internte radio.
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