This is a year-by-year timeline of the key dates and events relating to
Joseph May discovers that
selenium's conductivity is enhanced by light.
Mr. Senleq proposes FAX
transmission using a selenium scanner and telegraphy.
First articles appear in Scientific
American about the possibility of television.
Paul Nipkow patents the
television scanning disk.
Victorian Trade Card predicts a device that can transmit picture and
sound. See a scan of this card by clicking
1900 - 1919
First known use of the word
"television" at 1900 Paris Exhibition
Boris Rosing (Russia)
designs mechanical scanner with CRT receiver
Campbell Swinton proposes
CRT for both scanning and receiving.
Rosing and college student Zworykin (as assistant), achieve first transmission
Swinton describes CRT system in detail.
RCA becomes subsidiary of
GE. A 28 year old David Sarnoff is named manager.
1920 - 1929
Philo T. Farnsworth, at age
14, has a vision of electronic TV scanning while plowing hay.
C. Francis Jenkins
transmits still pictures by wireless with a mechanical system.
Farnsworth explains his electronic TV system to his high school teacher.
As Westinghouse employee,
Zworykin files patent application for all-electronic system. He is not able to build or demonstrate it at this time.
Ernst Alexanderson starts television work at GE.
Kenjiro Takayanagi starts
his television work in Japan.
Baird demonstrates his
mechanical system at Selfridge's Store in London
Jenkins transmits "moving objects" -- (a windmill) in Washington,
Zworykin demonstrates a working system to his bosses at Westinghouse.
Baird gets his first
license to transmit television in London.
Farnsworth gets $6000 advance from George Everson in Salt Lake City.
Philo Farnsworth marries Elma Gardner, and moves to San Francisco.
Alexanderson is proclaimed the "Inventor of Television" by the
press in St. Louis.
January - Alexanderson
demonstrates mechanical TV to Radio Engineers.
April - AT&T demos mechanical system - Herbert Hoover televised.
"Television Now Fact", the New York World newspaper
September - Farnsworth transmits a straight line via his electronic CRT
Baird transmits from London
to New York, using his mechanical system.
Takayanagi gives a demonstration of his CRT system in Japan.
Farnsworth demonstrates his CRT system to the press in San Francisco.
Station WLEX, Lexington, Mass., (about 15 miles NW of Boston)
broadcasting via mechanical system.
Zworykin begins development
of the kinescope, his CRT receiver.
April 1929 -- W1WX (which would
eventually become W1XAV), the Shortwave and Television mechanical
station, goes on the air.
1930 - 1934
January - David Sarnoff
becomes President of RCA at age 38.