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Demonstrated
1955
1st solar automobile demonstrated, Chicago, Illinois
1951
1st X-ray moving picture process demonstrated
1949
Gas turbine-electric locomotive demonstrated, Erie Pa
1948
Facsimile high-speed radio transmission demonstrated (Washington D.C.)
1947
Radar for commercial and private planes 1st demonstrated
1947
Lens to provide zoom effects demonstrated in New York City
1947
1st instant developing camera demonstrated in New York City, by E H Land
1942
1st self-sustaining nuclear chain reaction demonstrated, Chicago
1940
1st electron microscope demonstrated (RCA), Philadelphia, Pa
1940
RCA demonstrated its new electron microscope in Philadelphia
1939
1st jet plane, Heinkel He 178, demonstrated to German Air Ministry
1935
RADAR-Radio Detection and Ranging 1st demonstrated (Robert Watson-Watt)
1931
1st LP record demonstrated (RCA Victor, New York City), venture failed
1929
Loetafoon celluloid film system demonstrated in Amsterdam
1926
Television 1st demonstrated (J L Baird, London)
1909
Colored moving pictures demonstrated at Madison Square Garden, New York City
1906
Dr. Lee DeForest demonstrated his electrical vacuum tube (radio tube)
1897
1st submarine with an internal combustion engine demonstrated
1896
Vitascope system of movie projection 1st demonstrated (New York City)
1892
George Thomson, demonstrated electron diffraction, Nobel 1937
1879
Tom Edison privately demonstrated incandescent light at Menlo Park
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