The Franck–Hertz experiment was the first electrical measurement to clearly show the quantum nature of atoms. It was presented on April 24, 1914, to the...
33 KB (3,818 words) - 09:27, 16 September 2024
Density matrix (redirect from Von Neumann equation)
Neumann entropy of a convex combination of these states, ρ = ∑ i p i ρ i , {\displaystyle \rho =\sum _{i}p_{i}\rho _{i},} is given by the von Neumann...
36 KB (5,245 words) - 19:07, 29 June 2024
been a member of the Franck Band (alongside Hinrich Franck, Hardy Fischötter and Claus Fischer) and the group Berns-Köbberling-Neumann (with Pepe Berns and...
3 KB (376 words) - 08:38, 12 January 2023
Fritz Fischer 1981 Werner Mennicke 1983 Hans Krattiger-Enzler 1984 Anne Franck-Neumann 1985 Ernst Hug 1986 Marcel Wunderlin 1987 Werner Richter 1988 Johannes...
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166ff Neumann, NBA I/36, Krit. Bericht: 20ff Neumann, NBA I/36, Krit. Bericht: 24ff Neumann, NBA I/39, Krit. Bericht: 42 Dürr, Bericht Duisburg Neumann, NBA...
61 KB (9,887 words) - 06:31, 7 August 2024
science fiction novel by James S. A. Corey (pen name of Daniel Abraham and Ty Franck). It is about a conflict in the Solar System that involves the polities...
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Measurement in quantum mechanics (redirect from Von Neumann measurement scheme)
possible state of the physical system. The approach codified by John von Neumann represents a measurement upon a physical system by a self-adjoint operator...
66 KB (8,316 words) - 23:34, 27 August 2024
ISSN 0001-7701. J. von Neumann (1932). Mathematische Grundlagen der Quantenmechanik (in German). Berlin: Springer. J. von Neumann (1955). Mathematical Foundations...
23 KB (2,732 words) - 20:30, 20 August 2024
semi-definite operators on a Hilbert space. POVMs are a generalization of von Neumann measurements and, correspondingly, quantum measurements described by POVMs...
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graduation, he worked as an instructor at the University of Chicago with James Franck. Shortly afterwards, in 1943, Robert Oppenheimer recruited him from Chicago...
14 KB (1,437 words) - 20:43, 3 August 2024