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Heinrich Rudolf Hertz (/ h ɜːr t s /, HURTS; German: [ˈhaɪnʁɪç hɛʁts]; [1] [2] 22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of the electromagnetic waves predicted by James Clerk Maxwell's equations of electromagnetism.
In Hertz's 1887 experiment he found that these waves would transmit through different types of materials and also would reflect off metal surfaces in his lab as well as conductors and dielectrics. The nature of these waves being similar to visible light in their ability to be reflected, refracted, and polarized would be shown by Hertz and ...
Hertz wireless experiments (1887): Heinrich Hertz demonstrates free space electromagnetic waves, predicted by Maxwell's equations, with a simple dipole antenna and spark gap oscillator. Thomson's experiments with cathode rays (1897): J. J. Thomson's cathode ray tube experiments (discovers the electron and its negative charge).
1863 – Gregor Mendel's pea plant experiments (Mendel's laws of inheritance). 1887 – Heinrich Hertz discovers the photoelectric effect. 1887 – Michelson and Morley: Michelson–Morley experiment, showing that the speed of light is invariant. 1896 – Henri Becquerel discovers radioactivity. 1897 – J. J. Thomson discovers the electron.
1989 – The Rise of the Wave Theory of Light: Optical Theory and Experiment in the Early Nineteenth Century; 1993 – Einstein Papers Project Vol. 3 (one of nine contributing editors) 1994 – The Creation of Scientific Effects: Heinrich Hertz and electric waves; 1995 – Scientific Practice: Theories and Stories of Doing Physics (editor)
German physicist Heinrich Hertz in 1887 built the first experimental spark gap transmitters during his historic experiments to demonstrate the existence of electromagnetic waves predicted by James Clerk Maxwell in 1864, in which he discovered radio waves, [23] [24]: p.3-4 [25] [17]: p.19, 260, 331–332 which were called "Hertzian waves" until ...
This fact was later confirmed experimentally by Heinrich Hertz in 1887. The physicist Richard Feynman predicted that, "From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of ...
1886: Heinrich Hertz succeeds in proving the existence of electromagnetic waves for the first time – now the groundwork for wireless telegraphy and radio broadcasting in physical science is laid. 1887: Unaware of Charles Sumner Tainter's experiments, German-American Emil Berliner has his phonograph patented. He used a disk instead of a ...
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