History of telecommunications


  Glossary Scientists

History Telegraph
History Radio
TV History
History Components 

   




Historical Time line of telecommunications 
By Sergio Arienti ®



  


   
  

   

1644
Production Vacuum
Evangelista Torricelli


 

1817
Discovery of selenium
Jöns Jacob Berzelius


 

1832
Experimental Telegraph galvanometric
C.F. Gauss


 
G.E. Weber


 

1837
Quadrant Telegraph 

Cooke


 
Charles Wheatstone


 

1837
Relay
Joseph Henry


 

1838
Experiments with electric shock in rarefied gas
Michael Faraday


 

1838
Telegraph with a wire
K. Steinheil


  

1839
Photo voltaic Effect
Alexandre Becquerel





1844
Distribution of the telegraph and Morse code 
Samuel Finley Breese Morse


  

1851
Spools of Ruhmkorff Heinrich Daniel Ruhmkorff


 

1853
Telegraph Duplex Transmission
Wilhelm Julius Gintl


 

1855
A tube cathode ray tube (prototype) - pump vacuum production
Heinrich Geissler


A tube cathode ray tube (study of discharges in the rarefied gas)    Julius Plücker


 

1864
The theory of electromagnetic waves 

James Clerk Maxwell


 

1866
It poses first transatlantic telegraphic hollow (31.03.1866)



 

1869
RC tube  Hittorf (experimentation)
Johann Wilhelm Hittorf





1870
Code Baudot
Émile Baudot


 

1871
Invention phone
Antonio Meucci


 

1873
Research on photo conductivity of selenium
Willoughby Smith


 

1875
Distribution of the phone
Alexander Graham Bell


 

1879
Microphone coal
Thomas Alva Edison


 

1879
RC tube  Crookes (1879)
William Crookes


 

1881
LE THEATROPHONE
Clément Ader


   

1884
Detector of electromagnetic waves  (coherer)
Temistocle Calzecchi Onesti


 

1884
Television mechanics (Elektrisches Teleskop) 
Paul Nipkow


 

1887
Experimentation electromagnetic waves
Heinrich Rudolph Hertz


 

1888
Detector of electromagnetic waves  (coherer)
Désiré Edouard Branly


 

1888
R.C.Tube  Goldstein  (1888- ray channel)
Eugen Goldstein


 

1891
Automatic phone switching
Almon Brown Strowger


 

1891
A tube cathode ray tube
Heinrich Rudolph Hertz


 

1894
R.C.Tube  Lenard   (1894)
Philip Eduard Anton Lenard


 

1895
Wireless Telegraphy 
Guglielmo Marconi


 

1897
A tube cathode ray tube (oscilloscope)
Karl Ferdinand Braun


 

1898
Detector of electromagnetic waves (coherer)
Oliver Joseph Lodge


 

1901
Detector crystal of Galena (diode to galena)
Jagadis Chunder Bose


 

1904
Diode
John Ambrose Fleming


 

1906
Radio AM  (AMPLITUDE MODULATION)
Reginald Aubrey Fessenden


 

1906
Amplifier -Triode (audion)
Lee De Forest 


 

1906
Detector crystal silicon
Greenleaf Whittier Pickard


 

1906
Detector crystal of carborundum
Henry Harrison Chase Dunwoody


 

1913
Circuits regeneration or Receiver jet
Edwin Howard Armstrong


 

1918
Superheterodine
Lucien Levy


  

1923
Electronic Television (prototype)
Vladimir Zworykin


 

1924
Television (mechanical)
John Logie Baird 


 

1925
Iconoscope  (pipe from shooting)
Vladimir Zworykin 


 

1932
Tube cathodique






1933
Radio FM ( FREQUENCY MODULATION)
Edwin Howard Armstrong


 

1936
Photo multiplier

Vladimir Zworykin


 

1944
Inter carrier
Louis W. Parker


 

1947
Transistor
William Schokley


 
John Bardeen




Walter Brattain


 

1958
Integrated circuits
Jack Kilbi


 
Robert N. Noyce


 

1971
Microprocessor
Federico Faggin




Marcian Edward Hoff


 

Stanley Mazor

 Last update 25/09/2015