The Year: 1907
Sir Robert Baden-Powell founds the Boy Scouts with the first scout camp at Brownsea Island.
Indian Territory and Oklahoma Territory become Oklahoma and are admitted as the 46th U.S. state.
John Wayne, the American actor, is born.
Hershey milk-chocolate Kisses are introduced.
And New York inventor Lee de Forest improves the Fleming diode by adding an electrode. de Forest discovered that if he applied the signal from the wireless-telegraph antenna to the grid created by the added electrode he could obtain a much more sensitive detector of the signal. In fact the grid was changing, or modulating, the current flowing from the filament to the plate. This device, the audion, was the first successful electronic amplifier. It was the genesis of today's huge electronics industry.
So the next time you are sitting at that concert enjoying the electric guitar, remember that it was made possible by de Forest's modification.
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