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The Electric Telegraph (1838-1922) - The electric telegraph revolutionized long-distance communication, replacing earlier semaphore communication lines. In addition to its primary use for point-to-point messages, other applications were developed, including printing telegraphs ("tickers") used for distributing stock quotes and news reports.
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n 1874, William Blackstone of Indiana built a birthday present for his wife. It was a machine which removed and washed away dirt from clothes. The first washing machines designed for convenient use in the home.
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First commercial power station opens in San Francisco, uses Charles Brush generator and arc lights. First commercial arc lighting system installed, Cleveland, Ohio.
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THOMAS EDISON DISCOVERED FILMENT IN AN OXYGEN FREE BULB THAN BURN UP TO 40 HOURS
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Steam turbine invented by Charles Parsons
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THIS MACHINE WAS USED TO MAKE NEWSPAPER AND MAGAZINES.
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Rotating field AC alternator invented by Nikola Tesla.
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Oregon City Oregon, Willamette Falls station, first AC hydroelectric plant.
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Radio at Sea (1891-1922) - The first major use of radio was for navigation, where it greatly reduced the isolation of ships, saving thousands of lives, even though for the first couple of decades radio was generally limited to Morse code transmissions. In particular, the 1912 sinking of the Titanic highlighted the value of radio to ocean vessels.
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General Electric Company formed by the merger of Thomson-Houston and Edison General Electric
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In Austin, Texas, the first dam designed specifically for hydroelectric power built across Colorado River is completed.
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Electron discovered by J. J. Thomson.
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John Ambrose Fleming invented the diode rectifier vacuum tube.
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Lee De Forest invented the electric amplifier
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Electric refrigerator is invented. Robert Millikan measured the electric charge on a single electron.
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IN 1929 PHILIO T FARNSWORTH CREATED THE TELEVISION
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Percy Spencer inveneted the microwave and is company patent it
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The transistor is invented .
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The first U.S. windfarm is opened.
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James Clerk Maxwell wrote equations that described the electromagnetic field, and predicted the existence of electromagnetic waves traveling with the speed of light.
