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1 dzień temu · Historical development 1963: Edwin Jaynes & Fred Cummings. The model was originally developed in a 1963 article by Edwin Jaynes and Fred Cummings to elucidate the effects of giving a fully quantum mechanical treatment to the behavior of atoms interacting with an electromagnetic field.In order to simplify the math and allow for a tractable calculation, Jaynes and Cummings restricted their ...
4 godz. temu · The smallest known at the time, in the 1920s, was the electron. If the previous calculations are carried out, we find that, for an electron (whose mass is \({m}_{e}\simeq {10}^{-30 ... (k\), the exponential terms will add up out of phase and the modulus of the integral will be small, contrary to the case in which the phases are nearly ...
4 godz. temu · The loosening of bolted joints is a complex nonlinear process and will be affected by many factors such as the friction coefficient between the clamped parts, the friction coefficient between the contact threads of bolted joints, the preload of bolted joints, the amplitude of external load, temperature, and the material of the structures [].Some research on the mechanism of loosening behavior ...
4 godz. temu · In parallel with W. Heisenberg and E. Schrödinger, but independently from them, also P.A.M. Dirac developed a formalization of quantum mechanics. In this chapter, we will present Dirac’s general and abstract version of quantum mechanics together with his new—and now universally adopted—formalism. We will proceed by making a discussion on ...
4 godz. temu · Metal-matrix reinforced with elastic particles composite materials have drawn much interests due to their high strengthss, high modulus and good conductivities, which can be served effectively for the extreme environments, especially at elevated temperature [1,2,3,4].It has been found that the mechanical performance of metal-matrix composites (MMCs) tends to be improved with the size of ...
