Only show
results for:

Topics related to "Helmholtz,"

Hermann Ludwig Ferdinand von Helmholtz
Hermann Ludwig Ferdinand von Helmholtz , 1821-94, German scientist. Although known especially as a physicist and biologist, he was also a physician, mathematician, philosopher, and lecturer on popular science. He extended the application of the law of conservation of energy and in 1847 formulated it... Read more
Christine Ladd-Franklin
Christine Ladd-Franklin 1847-1930, American scientist, b. Windsor, Conn., grad. Vassar 1869. She was the first woman student to enter Johns Hopkins (1878), her special studies being directed toward logic and the theory of color. She studied in Göttingen (1891-92) and worked in Helmholtz's labo... Read more
ophthalmoscope
ophthalmoscope , instrument used for examining the inner structure of the eye . The device was invented by the German physiologist H. L. F. von Helmholtz in 1851. His model consisted of three plates of glass pressed together and mounted on a handle at a 45° angle. A light was placed beside the ... Read more
Thomas Young
Thomas Young 1773-1829, English physicist, physician, and Egyptologist. He established (1799) a medical practice in London and was elected (1811) to the staff of St. George's Hospital there. His lectures while professor of natural philosophy (1801-3) at the Royal Institution, London, published as ... Read more
vision
vision physiological sense of sight by which the form, color, size, movements, and distance of objects are perceived. Vision in Humans The human eye functions somewhat like a camera; that is, it receives and focuses light upon a photosensitive receiver, the retina. The light rays are be... Read more
George Ellery Hale
George Ellery Hale 1868-1938, American astronomer, b. Chicago, grad. Massachusetts Institute of Technology, 1890. He founded and directed three great observatories (Yerkes, Mt. Wilson, and Palomar), each in its time the greatest in the world, and was active in organizing interdisciplinary scientifi... Read more
vortex
vortex , mass of fluid in whirling or rotary motion. To simplify the analysis, vortex motion usually describes motions in a frictionless fluid. In such cases the absence of friction would make it impossible to create or to destroy vortex motion. Motion in such a fluid would be a permanent flow patte... Read more
psychology
psychology science or study of the thought processes and behavior of humans and other animals in their interaction with the environment. Psychologists study processes of sense perception , thinking, learning , cognition, emotions and motivations , personality , abnormal behavior, interactions b... Read more
sun
sun intensely hot, self-luminous body of gases at the center of the solar system . Its gravitational attraction maintains the planets, comets, and other bodies of the solar system in their orbits. General Characteristics of the Sun The sun is actually a star of about medium size; it appe... Read more
physics
physics branch of science traditionally defined as the study of matter , energy , and the relation between them; it was called natural philosophy until the late 19th cent. and is still known by this name at a few universities. Physics is in some senses the oldest and most basic pure science; it... Read more

Encyclopedia entries related to "Helmholtz,"

Helmholtz, Hermann Von
Encyclopedia entry from: Gale Encyclopedia of Psychology Hermann von Helmholtz 1821-1894 German scientist who conducted...research on the nervous system. Hermann Helmholtz was one of the few scientists to master...concept of conservation of energy. Helmholtz was born into a poor but scholarly family...
Hermann Ludwig Ferdinand von Helmholtz
Encyclopedia entry from: Encyclopedia of World Biography Hermann Ludwig Ferdinand von Helmholtz The German physicist and physiologist Hermann Ludwig Ferdinand von Helmholtz (1821-1894) made the first mathematical...31, 1821, in Potsdam, Hermann von Helmholtz was the eldest of six children of August...
Helmholtz, Hermann Ludwig Ferdinand von
Book article from: World Encyclopedia Helmholtz, Hermann Ludwig Ferdinand von (1821–94) German anatomist, physicist, and physiologist. He made contributions...
Young-Helmholtz theory
Book article from: The Columbia Encyclopedia, Sixth Edition Young-Helmholtz theory see vision .
Wundt, Wilhelm Max
Encyclopedia entry from: Gale Encyclopedia of Psychology ...physiological psychologist Hermann von Helmholtz came there in 1858, and Wundt was his...importance. Sight and hearing , which Helmholtz had already carefully studied, were...to the Studien were by Wundt himself. Helmholtz is reported to have said of some of Wundt...
Wilhelm Max Wundt
Encyclopedia entry from: Encyclopedia of World Biography ...physiological psychologist Hermann von Helmholtz came there in 1858, and Wundt for a...importance. Sight and hearing, which Helmholtz had already carefully studied, were...to the Studien were by Wundt himself. Helmholtz is reported to have said of some of Wundt...
Heinrich Rudolf Hertz
Encyclopedia entry from: Encyclopedia of World Biography ...arrival there he became Hermann von Helmholtz's student. By spring 1879 Hertz...degree magna cum laude. He became Helmholtz's assistant at the Physikalisches...cherished idea of his revered teacher, Helmholtz, that electromagn
vision
Book article from: The Columbia Encyclopedia, Sixth Edition ...constitute the spectrum. The Young-Helmholtz theory, developed in 1802 by Thomas Young and H. L. F. Helmholtz, is based on the assumption that there...conclusive evidence shown that the Young-Helmholtz theory is, indeed, accurate. The...
Ludwig Boltzmann
Encyclopedia entry from: Encyclopedia of World Biography ...from the University of Graz. During his 3 years there, he twice visited Heidelberg and Berlin and established contacts with Helmholtz, Kirchhoff, Bunsen, and the mathematician Koenigsberger. But he soon realized that his Austrian Gemütlichkeitclashed...
William James
Encyclopedia entry from: Encyclopedia of World Biography ...physiology, notably in Germany, where he attended lectures and saw the laboratory work of such great leaders as Hermann von Helmholtz and Rudolf Virchow. But James was also drawn very vigorously into the pioneering intellectual adventures of the America of...

Dictionary entries related to "Helmholtz,"

Helmholtz, Hermann von
Dictionary entry from: Complete Dictionary of Scientific Biography Helmholtz, Hermann von ( b . Potsdam, Germany...epistemology, hydrodynamics, electrodynamics Helmholtz was the oldest of four children. From...His father, August Ferdinand Julius Helmholtz, was the typical product of a romantic...
Helmholtz–Kelvin contraction
Book article from: A Dictionary of Astronomy Helmholtz–Kelvin contraction The contraction...converted into heat and radiated away. The Helmholtz–Kelvin contraction time...scientist Hermann Ludwig Ferdinand von Helmholtz (1821–94) and Lord Kelvin...
Kelvin–Helmholtz contraction
Book article from: A Dictionary of Astronomy Kelvin–Helmholtz contraction See helmholtz–kelvin contraction .
Helmholtz, Hermann Ludwig Ferdinand von
Book article from: A Dictionary of Biology Helmholtz, Hermann Ludwig Ferdinand von (1821–94) German physiologist and physicist. In 1850 he measured the speed of a nerve...
Kōnig, Arthur
Dictionary entry from: Complete Dictionary of Scientific Biography ...physics . K ö nig, one of Helmholtz ’ s most prominent students...and Berlin. He became an assistant to Helmholtz in 1882 at the physics institute of the...was a zealous defender of the Young-Helmholtz theory of color perception. He investigated...
Hering, Karl Ewald Konstantin
Dictionary entry from: Complete Dictionary of Scientific Biography ...great master in that field, Hermann von Helmholtz, proposing alternative views that emphasized...Thus he found himself in opposition to Helmholtz and other empiricists, who believed...Hering put forward (against the Young-Helmholtz theory of three visual substances and...
Dubois-Reymond, Emil Heinrich
Dictionary entry from: Complete Dictionary of Scientific Biography ...friend of Ernst Br ü cke, Hermann Helmholtz, Carl Reichert, and Carl Ludwig. In...this by Br ü cke and later by Helmholtz. On 14 January 1845 he founded the Physikalische...others in Berlin. In December 1845 he met Helmholtz and was deeply impressed by him. Du...
Lummer, Otto Richard
Dictionary entry from: Complete Dictionary of Scientific Biography ...1884, Lummer became an assistant to Helmholtz; and in 1887 he followed the latter...Technische Reichsanstalt (PTR) in Berlin. Helmholtz, revered teacher and his constani model...Haidinger and Mascart) by Lummer in 1884 in Helmholtz ’ laboratory at the University...
Kōnigsberger, Leo
Dictionary entry from: Complete Dictionary of Scientific Biography ...Bunsen and the physicists Kirchhoff and Helmholtz. These contacts undoubtedly provided...analytical mechanics and his biography of Helmholtz (1902). the latter and the biographical...nderlichen (Leipzig, 1889); H. v Helmholtz , 2 vols. (Brunswick, 1902); C...
Pflüger, Eduard Friedrich Wilhelm
Dictionary entry from: Complete Dictionary of Scientific Biography ...received the chair of physiology at Bonn, succeeding Helmholtz. Helmholtz had recommended him to the Bonn facutly by stating...was given little in the way of space or resources. Helmholtz had been responsible for both anatomy and physiology...

Related newspaper, magazine, and trade journal articles from HighBeam Research

The "imperial chancellor of the sciences": Helmholtz between science and politics.(Hermann yon Helmholtz)
Magazine article from: Social Research; 12/22/2006; ; 700+ words ; ...1971; McClelland, 1980). Hermann yon Helmholtz was both a beneficiary of and contributor...This led father and son to decide that Helmholtz should instead become a medical doctor...expense--and this in turn brought Helmholtz into early and direct contact with the...
Preconditioned conjugate-residual solvers for Helmholtz equations in nonhydrostatic models
Magazine article from: Monthly Weather Review; 4/1/1997; ; 700+ words ; ...is complicated by the need to solve a Helmholtz equation at each time step. The authors...and efficient technique for solving the Helmholtz equation using a conjugate-residual...solvers that have been used with the Helmholtz equations that arise in compressible...
Kelvin-Helmholtz Instability of Potential Vorticity Layers: A Route to Mixing
Magazine article from: Journal of the Atmospheric Sciences; 6/15/2004; ; 700+ words ; ...PV layers are subject to a Kelvin-Helmholtz instability, operating on much smaller...coordinates). It is found that Kelvin-Helmholtz appears, for certain values of [alpha...tilted past a critical angle, Kelvin-Helmholtz instability becomes possible. It is...
Kelvin-Helmholtz Billows in the Eyewall of Hurricane Erin
Magazine article from: Monthly Weather Review; 3/1/2006; ; 700+ words ; ...photograph of vertically aligned Kelvin-Helmholtz billows in the eastern eyewall of Hurricane...then be large enough to cause Kelvin-Helmholtz instability. Resulting vortices may...should be avoided by aircraft.2 Kelvin-Helmholtz billows were photographed on 10 September...
KELVIN-HELMHOLTZ INSTABILITY IN AN ANVIL CLOUD
Magazine article from: Bulletin of the American Meteorological Society; 1/1/2005; ; 470 words ; ...amplitude shear instability with Kelvin-Helmholtz billow clouds along frontal zones, to...until now, no large-amplitude Kelvin-Helmholtz billows have been documented inside a...main shear axis along which the Kelvin-Helmholtz instability developed, several identifiable...
Numerical approximation to Helmholtz equation using a spectral method.(Technical report)
Magazine article from: International Journal of Tomography & Statistics; 9/22/2008; ; 700+ words ; ...technic is based on using a spectral method to resolve the Helmholtz equation in an hybrid coordinate system: cartesian for the vectorial Helmholtz equation and spherical for the scalar Helmholtz equation. Because of the truncation error, the spherical...
Bavarian Nordic rejects claims from Helmholtz Zentrum Munchen.
Newspaper article from: Nordic Business Report; 8/31/2009; 553 words ; ...Bavarian Nordic rejects claims from Helmholtz Zentrum Munchen(C)1994-2009 M2...the claims by German research centre Helmholtz Zentrum Munchen filed in the ICC International...received a request for arbitration from Helmholtz Zentrum Munchen, based on two old agreements...
Differential Diffusion in Breaking Kelvin-Helmholtz Billows
Magazine article from: Journal of Physical Oceanography; 6/1/2005; ; 700+ words ; ...during the growth and collapse of Kelvin-Helmholtz billows. The ratio of diffusivities...of the dynamics of turbulent Kelvin-Helmholtz billows, and are compared in detail...simulations (DNS) of turbulent Kelvin-Helmholtz (KH) billows. Several large-scale...
Cloud Radar Observations of Kelvin-Helmholtz Instability in a Florida Anvil
Magazine article from: Monthly Weather Review; 10/1/2004; ; 700+ words ; ...instability, also known as Kelvin-Helmholtz instability, in a convective outflow...large-amplitude, embedded Kelvin-Helmholtz billows inside a tropical anvil and point...captured radar imagery of Kelvin-Helmholtz billows in clouds associated with strong...
Bruker Announces Order for World's First Commercial 263 GHz EPR Spectrometer from the Helmholtz-Zentrum in Berlin for Solar Energy and Photovoltaic Research Applications.
Newspaper article from: Electronics Newsweekly; 7/15/2009; 700+ words ; ...system is expected to be installed at the Helmholtz-Zentrum in Berlin in late 2009 for...collaboration project between Bruker and the Helmholtz-Zentrum on EPR probe development for...cells," stated Dr. Klaus Lips from Helmholtz-Zentrum Berlin, the coordinator of...