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  2. Heinrich Hertz - Wikipedia

    en.wikipedia.org/wiki/Heinrich_Hertz

    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.

  3. History of radar - Wikipedia

    en.wikipedia.org/wiki/History_of_radar

    Hans Hollmann and Theodor Schultes, both affiliated with the prestigious Heinrich Hertz Institute in Berlin, were added as consultants. The first apparatus used a split-anode magnetron purchased from Philips in the Netherlands. This provided about 70 W at 50 cm (600 MHz), but suffered from frequency instability.

  4. List of scientists whose names are used as units - Wikipedia

    en.wikipedia.org/wiki/List_of_scientists_whose...

    Heinrich Rudolf Hertz [37] 1857–1894 German Frequency [38] hertz (Hz) Rolf Maximilian Sievert [39] 1896–1966 Swedish Dose equivalent of radiation [citation needed] sievert (Sv) Louis Harold Gray [40] 1905–1965 British (English) Absorbed dose of radiation [41] gray (Gy)

  5. Spark-gap transmitter - Wikipedia

    en.wikipedia.org/wiki/Spark-gap_transmitter

    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 ...

  6. Contact mechanics - Wikipedia

    en.wikipedia.org/wiki/Contact_mechanics

    The original work in contact mechanics dates back to 1881 with the publication of the paper "On the contact of elastic solids" [3] "Über die Berührung fester elastischer Körper" by Heinrich Hertz. Hertz attempted to understand how the optical properties of multiple, stacked lenses might change with the force holding them together. Hertzian ...

  7. Category:Heinrich Hertz - Wikipedia

    en.wikipedia.org/wiki/Category:Heinrich_Hertz

    This is a topic category for the topic Heinrich Hertz. Pages in category "Heinrich Hertz" The following 10 pages are in this category, out of 10 total. This list may ...

  8. History of radio - Wikipedia

    en.wikipedia.org/wiki/History_of_radio

    Heinrich Rudolf Hertz (1856–1894) proved the existence of electromagnetic radiation. In an 1864 presentation, published in 1865, James Clerk Maxwell proposed theories of electromagnetism and mathematical proofs demonstrating that light, radio and x-rays were all types of electromagnetic waves propagating through free space.

  9. History of special relativity - Wikipedia

    en.wikipedia.org/wiki/History_of_special_relativity

    After Heinrich Hertz in 1887 demonstrated the existence of electromagnetic waves, Maxwell's theory was widely accepted. In addition, Oliver Heaviside and Hertz further developed the theory and introduced modernized versions of Maxwell's equations. The "Maxwell–Hertz" or "Heaviside–Hertz" equations subsequently formed an important basis for ...