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It was the replacement of the DC08, and to all intents and purposes is virtually the same in appearance and design as the DC08. DC19T2 Origin no image: 2009: Same as DC19, but improved so that the brushbar can pick up on carpets and on hard floors. This model also used a plastic telescopic rod instead of the metal one found on the original DC19 ...
Dyson Limited, d.b.a Dyson, is a Singaporean–British multinational technology company. [7] Founded in 1991 by James Dyson in Malmesbury , England, the company designs and manufactures household appliances such as vacuum cleaners , air purifiers , hand dryers , bladeless fans , heaters , hair dryers , and lights.
Sir James Dyson (born 2 May 1947) [2] is a British inventor, industrial designer, farmer, and business magnate who founded the Dyson company. [ 3 ] [ 4 ] He is best known as the inventor of the bagless vacuum cleaner , which works on the principle of cyclonic separation .
In scattering theory, a part of mathematical physics, the Dyson series, formulated by Freeman Dyson, is a perturbative expansion of the time evolution operator in the interaction picture. Each term can be represented by a sum of Feynman diagrams .
Dyson's paper and his lectures presented Feynman's theories of QED in a form that other physicists could understand, facilitating the physics community's acceptance of Feynman's work. J. Robert Oppenheimer, in particular, was persuaded by Dyson that Feynman's new theory was as valid as Schwinger's and Tomonaga's.
Presentation by Dyson on Tears We Cannot Stop, September 22, 2017, C-SPAN Washington Journal interview with Dyson on Tears We Cannot Stop , December 24, 2017 , C-SPAN This article about a book on the United States is a stub .
Brian G. Dyson (born September, 1935) [1] was the chief executive officer (CEO) of Coca-Cola Enterprises Inc. from 1986 to 1991. Brian is also known for his “five balls” speech. [ 4 ]
The Schwinger–Dyson equations (SDEs) or Dyson–Schwinger equations, named after Julian Schwinger and Freeman Dyson, are general relations between correlation functions in quantum field theories (QFTs).
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