HEINRICH RUDOLF HERTZ (1857

HEINRICH RUDOLF HERTZ
(1857 - 1894)
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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
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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
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Edouard Branly
(1846 - 1940)
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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)
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Aleksandr Stepanovich Popov
(1859 - 1905)
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Nikola Tesla
(1856-1943)
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Sir John Ambrose Fleming
(1849 – 1945)
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Lee De Forest
(1873 – 1961)
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Michael Idvorsky
Pupin
(1858 - 1935 )
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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 )