HEINRICH RUDOLF HERTZ (1857
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HEINRICH RUDOLF HERTZ (1857 - 1894) JAMP’05 SOME POSSIBILITIES OF ELECTRICITY Fortnightly Review, 1, 1892: pages 174-176. William Crookes (1832-1919 ) Propuso las ondas EM para la telegrafía. Dio los tres requisitos fundamentales: transmisores fiables, receptores sintonizables sensibles y antenas direccionales JAMP’05 The Americans have need of the telephone, but we do not. We have plenty of messenger boys. Sir William Preece, chief engineer of the British Post Office, 1876 JAMP’05 Edouard Branly (1846 - 1940) JAMP’05 Augustus Righi is pictured here carrying out an experiment with electrical charges in the hall of the Physics Institute at the University of Bologna where he was a professor and an expert on Hertzian waves. Righi, who was a friend of the family first made Marconi aware of Hertzian waves (1900) . Sir Oliver Joseph Lodge (1851 - 1940) JAMP’05 Aleksandr Stepanovich Popov (1859 - 1905) JAMP’05 Nikola Tesla (1856-1943) JAMP’05 Sir John Ambrose Fleming (1849 – 1945) JAMP’05 Lee De Forest (1873 – 1961) JAMP’05 Michael Idvorsky Pupin (1858 - 1935 ) JAMP’05 El circuito de chispa no en la antena de transmisión (como Marconi) sino en otro circuito acoplado inductivamente con el de la antena. Professor Adolph Slaby (1849 - 1913 )
