Wien, Wilhelm

Wien, Wilhelm Carl Werner Otto Fritz Franz (1864-1928) German physicist in Munic Nobel Prize in physics 1911... 

Whitaker, Milton C., 120, 130 Whitmore, Frank, 286 Widener, Peter A. B., 152 Wien, Wilhelm, 117... 

The experimental value of the constant is 5.67 X 10 8 W-m 2k 4. A few years later, in 1893, Wilhelm Wien examined the shift in color of black-body radiation as the temperature increases and discovered that the wavelength corresponding to the maximum in the intensity, max, is inversely proportional to the temperature, Xmax °c I IT, and therefore that max X T is a constant (Fig. 1.6). This quantitative result is now called Wien s law and is normally written... 

Wilhelm Carl Werner Otto Fritz Wien (1864-1928). 

For his experimental work on the photoelec hie effect, Millikan was awarded the Nobel Prize in physics in 1923. Others whose contributions to the understanding of radiation led to Nobel Prizes in physics include Wilhelm Wien in 1911 for heat radiation laws, Planck in 1918 for the quantum concept, Johannes Stark in 1919 for spec rial properties, Einstein in 1921 in part for interpreting the photoelectric effect, Niels Bohr in 1922 for atomic radiation, James Franck and Gustav Hertz in 1925 for atom-electron interactions, and Wo If gang Pauli in 1945 for atomic properties. 

The German physicist Wilhelm Wien had proposed such an equation, which worked well only for high frequencies, and Lord Rayleigh (bom John William Stmtt) proposed another equation, which worked well only at low frequencies. In 1900 Planck was able to develop a single expression that combined these two earfier equations and accurately predicted the energy over the entire range of frequencies. 

Deutsches Museum, Handschnftenabteilung, NachlaB Wilhelm Wien C II, typed circular memo from Richard Zsigmondy, Friedrich Kruger und Max Bodenstein (11-12-13 February 1917). 

Wien s displacement law For a black body, r= constant, where Xm is the wavelength corresponding to the maximum radiation of energy and Tis the thermodynamic temperature of the body. Thus as the temperature rises the maximum of the spectral energy distribution curve is displaced towards the short-wavelength end of the spectrum. The law was stated by Wilhelm Wien (1864-1928). 

Manuel Garcia Velarde - Madrid Jean Salen on - Palaiseau Wilhelm Schneider - Wien... 

Max Karl Werner Wien (1866—1938), German physicist. Cousin of Wilhelm Wien (1864—1928), famous for the Wien displacement law, 1911 Nohel Prize laureate in physics. 

If we measured the intensity of blackbody radiation versus the wavelength emitted at different temperatures, we would obtain a series of curves similar to the ones shown in Figure 1.7. Experiments at the end of the nineteenth century by Josef Stefan and Wilhelm Wien led to two important empirical laws of blackbody radiation, now named the Stefan-Bc 1 and Wien s law. (An empirical law is one that is formira fl onfflw is... 

Wilhelm Wien (1864-1928). Gmnan [4iysicist. He received the Nobel Prize in Physics in 1911 for his work on blackbody radiation and also made important contributions to hydrodynamics and radiation theory. 

The wavelengths of thermal radiation follow a probability distribution depending only on temperature, which is given for a black-body by Planck s law. The most likely wavelength of the emitted radiation is given by Wien s law [Wilhelm Wien (1864—1928), 2-r,iax in p.m= 2898/Tj. 

It has long been observed that heat can pass from one body to another in the form of radiation with no material contact between the two bodies. This was called heat radiation. When it was discovered that motion of charges produced electromagnetic radiation, the idea that heat radiation was a form of electromagnetic radiation was taken up, especially in the works of Gustav Kirchhoff (1824-1887), Ludwig Boltzmann (1844-1906), Josef Stefan (1835-1893) and Wilhelm Wien (1864-1928) and its thermodynamic consequences were investigated [1]. 

Rutherford is also generally credited for the discovery of the proton (Rutherford 1919) even though first recorded by Wilhelm Wien. The neutron was discovered much later by Chadwick (Chadwick 1932). The electron was discovered by J.J. Thompson in 1897 (Thomson 1897). Interestingly, Chadwick was the student of Rutherford and Geiger, whereas Rutherford was a student of J.J. Thompson. 

Hannes Alfven, Louis Neel 1911 Wilhelm Wien... 

Wolff, Stefan L. Physicists in the Krieg der Geister Wilhelm Wien s Proclamation. Historical Studies in the Physical and Biological Sciences 33, no. 2 (2003) 337-68. 

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