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1910:
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Sweden's Elkstrom invents "flying spot" camera light beam.
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1911:
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Efforts are made to bring sound to motion pictures.
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1911:
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Rotogravure aids magazine production of photos.
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1911:
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"Postal savings system" inaugurated.
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1912:
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U.S. passes law to control radio stations.
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1912:
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Motorized movie cameras replace hand cranks.
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1912:
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Feedback and heterodyne systems usher in modem radio.
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1912:
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First mail carried by airplane.
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1913:
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The portable phonograph is manufactured.
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1913:
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Type composing machines roll out of the factory.
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1914:
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A better triode vacuum tube improves radio reception.
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1914:
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Radio message is sent to an airplane.
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1914:
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In Germany, the 35mm still camera, a Leica.
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1914:
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In the U.S., Goddard begins rocket experiments.
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1914:
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First transcontinental telephone call.
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1915:
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Radio-telephone carries speech across the Atlantic.
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1915:
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Birth of a Nation sets new movie standards.
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1915:
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The electric loudspeaker.
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1916:
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David Sarnoff envisions radio as "a household utility."
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1916:
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Cameras get optical rangefinders.
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1916:
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Radios get tuners.
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1917:
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Photocomposition begins.
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1917:
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Frank Conrad builds a radio station, later KDKA.
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1917:
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Condenser microphone aids broadcasting, recording.
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1918:
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First regular airmail service: Washington, D.C. to New York.
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1919:
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People can now dial telephone numbers themselves.
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1919:
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Short-wave radio is invented.
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1919:
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Flip-flop circuit invented; will help computers to count.
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