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Television. Julius Plücker - 1859. Sir William Crooks. Crooks tube. Beam pulled up by magnet. Karl Braun - 1897. Braun’s cathode ray tube. G. R. Carey – 1875. Shelford Bidwell – 1881. Maurice leBlanc. Paul Nipkow – 1884. Mechanical TV - 1884. Boris Rosing.
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Boris Rosing • First to use a cathode ray tube as a receiver for a mechanically scanned image
Archibald Campbell-Swinton • First to suggest using cathode ray tubes for both sending and receiving images
1911 – A. Sinding-Larsen suggested using radio instead of wires as a carrier of picture signals • We now have all the concepts for what we think of as “modern television” • And then World War I happened
Farnsworth won the lawsuit against Zworykin and RCA over who invented the kinescope and the iconoscope. Thus, he’s known as “the father of television.”
RCA now had to pay Farnsworth royalties to license his patents • Sarnoff said of RCA that it was determined “to collect patent royalties, not pay them.”
Date of demonstration 1930 1931 1933 1936 1939 1941 No. of picture lines 60 lines 120 lines 240 lines 343 lines 441 lines 525 lines
Television started broadcasting in 1939 • World War II brought everything to a halt
Post-war • RCA 630 set • RCA gave the plans to other companies • Set sales skyrocketed: • In 1946 – 6,000 • In 1952 – 21,782,000
Began broadcasting again in 1946 as basically “radio with pictures”
TV essentially stole radio’s programming –dramas, comedies, variety shows, talk shows, game shows, sports, news.All programming was done live.