Hermann von Helmholtz
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Hermann Ludwig Ferdinand von Helmholtz was a German physicist and physician who made significant contributions in several scientific fields, particularly hydrodynamic stability. The Helmholtz Associat
Hermann von Helmholtz
Helmholtz's polyphonic siren, Hunterian Museum, Glasgow
Helmholtz in 1848
1889 copy of Helmholtz's "Über die Erhaltung der Kraft", no. 1
Heinrich Hertz
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Heinrich Rudolf Hertz was a German physicist who first conclusively proved the existence of the electromagnetic waves proposed by James Clerk Maxwell's equations of electromagnetism.
Hermann von Helmholtz
…became interested in electromagnetism, and the Helmholtz equation is named for him. Although he made no major contributions to this field, his student Heinrich Rudolf Hertz became famous as the first to demonstrate electromagnetic radiation. Oliver Heaviside criticised Helmholtz's electromagnetic theory because it allowed…
Hertz, c. 1890
One of Hertz's radio wave receivers: a loop antenna with an adjustable spark micrometer (bottom).
Memorial of Heinrich Hertz on the campus of the Karlsruhe Institute of Technology, which translates as At this site, Heinrich Hertz discovered electromagnetic waves in the years 1885–1889
Heinrich Hertz