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German physicist. From the description of Autograph letters signed : Bonn, to Wilhelm von Beetz, 1861 Nov. 2 and 1877 Oct. 21. (Unknown). WorldCat record id: 270903804 German mathematician and physicist. From the description of Papers, 1839-1888. (Unknown). WorldCat record id: 83343218 ...
Botanist. From the description of Papers. (Unknown). WorldCat record id: 80927771 ...
Heinrich Hertz (b. Feb. 22, 1857, Hamburg, Germany–d. Jan. 1, 1894, Bonn, Germany) was a German physicist who first conclusively proved the existence of the electromagnetic waves theorized by James Clerk Maxwell's electromagnetic theory of light. The unit of frequency — cycle per second — was named the "hertz" in his honor....