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Six Easy Pieces (paperback book) ISBN 0-201-40825-2; Six Not-So-Easy Pieces (paperback book with original Feynman audio on CDs) ISBN 0-201-32841-0; Six Not-So-Easy Pieces (paperback book) ISBN 0-201-32842-9; Exercises for the Feynman Lectures (paperback book) ISBN 2-35648-789-1 (out of print) Feynman R, Leighton R, and Sands M.
The use of statistical mechanics is fundamental to the concepts of quantum optics: light is described in terms of field operators for creation and annihilation of photons—i.e. in the language of quantum electrodynamics. A frequently encountered state of the light field is the coherent state, as introduced by E.C. George Sudarshan in 1960.
In the late 17th century, Sir Isaac Newton had advocated that light was corpuscular (particulate), but Christiaan Huygens took an opposing wave description. While Newton had favored a particle approach, he was the first to attempt to reconcile both wave and particle theories of light, and the only one in his time to consider both, thereby anticipating modern wave-particle duality.
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The energy content of this volume element at 5 km from the station is 2.1 × 10 −10 × 0.109 = 2.3 × 10 −11 J, which amounts to 3.4 × 10 14 photons per (). Since 3.4 × 10 14 > 1, quantum effects do not play a role. The waves emitted by this station are well-described by the classical limit and quantum mechanics is not needed.
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Luminiferous aether or ether [1] (luminiferous meaning 'light-bearing') was the postulated medium for the propagation of light. [2] It was invoked to explain the ability of the apparently wave-based light to propagate through empty space (a vacuum), something that waves should not be able to do. The assumption of a spatial plenum (space ...
Electric cars are cheaper than ever before, with prices falling and a $7,500 federal tax credit. EV battery technology is advancing, and the network of public charging stations is growing nationwide.
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