Search results
Results from the WOW.Com Content Network
Helmholtz's polyphonic siren, Hunterian Museum, Glasgow. Hermann Ludwig Ferdinand von Helmholtz (/ ˈ h ɛ l m h oʊ l t s /; German: [ˈhɛʁ.man vɔn ˈhɛlmˌhɔlts]; 31 August 1821 – 8 September 1894; "von" since 1883) was a German physicist and physician who made significant contributions in several scientific fields, particularly hydrodynamic stability. [2]
Discovered osmosis: Hermann von Helmholtz (1821–1894) Explained hearing and vision. Biomechanics: Christian Wilhelm Braune (1831–1892) First to describe the methodology of human gait (walking). Bioelectromagnetics: Luigi Galvani (1737–1798) First to discover animal electricity through a series of experiments in 1780. Cardiovascular physiology
Discovered atomic nuclei are made of protons and neutrons. Wolfgang Helfrich: Co-inventor of Twisted nematic field effect. Rudolf Hell: Inventor of the first fax machine (Hellschreiber). Richard Hellmann: Hellmann's (Blue Ribbon) Mayonnaise, 1905. Hermann von Helmholtz: Discovered the principle of conservation of energy.
1857: Helmholtz resonance by Hermann von Helmholtz [433] 1859: Spectrometer by Robert Bunsen and Gustav Kirchhoff [434] 1861: First telephone transmitter by Johann Philipp Reis; [435] [13] he also coined the term "telephone" [13] 1864–1875: Centrifuge by brothers Alexander and Antonin Prandtl from Munich [436] 1865: Concept of entropy by ...
1842–43 – William Thomson, 1st Baron Kelvin and Julius von Mayer: Conservation of energy; 1842 – Christian Doppler: Doppler effect; 1845 – Michael Faraday: Faraday rotation (interaction of light and magnetic field) 1847 – Hermann von Helmholtz & James Prescott Joule: Conservation of Energy 2 [clarification needed]
Called Kelvin Helmholtz, they resemble rolling ocean waves and similar patterns have been seen by astronomers on Jupiter and the outermost part of the sun's atmosphere. ... Hermann von Helmholtz ...
He developed a version of the cathode tube and studied the penetration by X-rays of various materials. However, Lenard did not realize that he was producing X-rays. Hermann von Helmholtz formulated mathematical equations for X-rays. He postulated a dispersion theory before Röntgen made his discovery and announcement.
The existence of the Kelvin-Helmholtz instability was first discovered by German physiologist and physicist Hermann von Helmholtz in 1868. Helmholtz identified that "every perfect geometrically sharp edge by which a fluid flows must tear it asunder and establish a surface of separation".