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- Thomas Edison (20653 bytes)
24: ...oducible sound recording was first achieved by [[Leon Scott de Martinville]] (France, 1857), and other...
31: ... The quadruplex telegraph could send four simultaneous telegraph signals over the same wire. When Edi...
42: {{multi-video start}}
43: ...vention of the light bulb, late 1920s.|format=[[Theora]]}}
44: {{multi-video end}} - Johannes Kepler (17038 bytes)
2: ...is sometimes referred to as "the first [[theory|theoretical]] [[astrophysicist]]", although [[Carl Sag...
4: ...epler's career also coincided with that of [[Galileo Galilei]].
15: ...ematics and astronomy at the Protestant school in Graz, Austria. He accepted the position in April of [...
23: ...e first known work on the subject. He correctly theorized that their hexagonal nature was due to cold,...
27: ...o confess to the charges. However, only the courageous personal intervention of Kepler (despite the ri... - Adolf Hitler (51456 bytes)
13: ... the systematic extermination of over 11 million people, including 6 million [[Jew]]s, in a [[genocide...
22: ...g was his father (Alois gave the impression that Georg was still alive, but he was long dead). The spe...
24: ... impossible since the Jews had been expelled from Graz in the [[15th century]] and were not allowed to r...
25: ..., from [[Braunau]] to [[Passau]], [[Lambach]], [[Leonding]] and next to [[Linz]]. Young Adolf was repo...
33: ...ist_of_mayors_of_Vienna|Mayor of Vienna]], and [[Georg Ritter von Sch?er]], the leader of the pan-Germ... - Nikola Tesla (29894 bytes)
16: ...en]] in 1891. [[Tesla patents|His patents]] and theoretical work still form the basis for modern [[alt...
51: ...l engineering at the [[Austria Politechnic]] in [[Graz]], [[Austria]] ([[1875]]). While there, he studie...
60: ...s of his [[Tesla coil]] and began working with [[George Westinghouse]] at Westinghouse's [[Pittsburgh]...
75: ...xhibits. It was a historic event as Tesla and [[George Westinghouse]] introduced visitors to AC power...
91: ...ation - [[seismology]] - which he called ''[[telegeodynamics]]''. This was based on his reciprocating ...
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