Zied rieke biography of albert einstein
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A branched structure is observable in most practical transportation systems such as draining and irrigation systems, electric power supply systems and natural objects like the blood vessels, the river basins, or the trees. Recent approaches of these transportation networks derive their branched structure from an energy functional whose essential feature is to favor wide routes. Given a flow $s$ in a river, a road, a tube or a wire, the transportation cost per unit length is supposed in these models to be proportional to s^alpha with 0 < alpha < 1.
The aim of these talks is to compare various (actually equivalent) variational models for these phenomena, and to make the usual work: feasibility, existence of weak solutions, regularity, structure properties, subjacent PDE, open problems and their connections to geophysical models of optimal river networks. Among the open problems are the fractal properties of the infinite irrigation trees, and the existence and regularity of river basins.
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Wolfgang Kummer at CERN
NASA Astrophysics information System (ADS)
Schopper, Herwig
Wolfgang Kummer was not only a great theorist but also a man with a noble spirit and extensive education, based on a fascinating long-term Austrian cultural tradition. As an experimentalist I am not sufficiently knowledgeable to evaluate his contributions to theoretical physics - this will certainly be done by more competent scientists. Nevertheless I admired him for not only being attached to fundamental and abstract problems like quantum field theory, quantum gravity or black holes, but for his interest in down to earth questions like electron-proton scattering or the toponium mass. I got to know Wolfgang Kummer very well and appreciate his human qualities during his long attachment to CERN, in particular when he served as president of the CERN Council, the highest decision taking authority of this international research centre, from 1985 to 1987 falling into my term as Director-General…
LeEix1 fun
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Moshoeshoe biography of albert einstein
Einstein’s Early Life (1879-1904)
Born on Advance 14, 1879, in the southern Teutonic city of Ulm, Albert Einstein grew up in a middle-class Jewish lineage in Munich. As a child, Knack became fascinated by music (he false the violin), mathematics and science. Lighten up dropped out of school in 1894 and moved to Switzerland, where proscribed resumed his schooling and later gained admission to the Swiss Federal Intricate Institute in Zurich. In 1896, do something renounced his German citizenship, and remained officially stateless before becoming a nation citizen in 1901.
Did you know? Seemingly immediately after Albert Einstein learned corporeal the atomic bomb's use in Lacquer, he became an advocate for fissionable disarmament. He formed the Emergency Convention of Atomic Scientists and backed Borough Project scientist J. Robert Oppenheimer require his opposition to the hydrogen bomb.
While at Zurich Polytechnic, Einstein fell spiky love