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2024年5月23日 · Already in 1967, Dennis Sciama predicted that the cosmic microwave background has a significant dipole anisotropy. In recent years, the CMB dipole has been tested, and the results suggest our motion with respect to distant radio galaxies and quasars .
14 小時前 · 1968 – Martin Rees and Dennis Sciama theoretically predict microwave background fluctuation amplitudes created by photons traversing time-dependent wells of potential. 1969 – R. A. Sunyaev and Yakov Zel'dovich study the inverse Compton scattering of microwave background photons by hot electrons (see Sunyaev–Zel'dovich effect ).
5 天前 · He was initially disappointed to find that he had been assigned Dennis William Sciama, one of the founders of modern cosmology, as a supervisor rather than the noted astronomer Fred Hoyle, and he found his training in mathematics inadequate for work in
3 天前 · v. t. e. Quantum mechanics is a fundamental theory in physics that describes the behavior of nature at and below the scale of atoms. [2] : 1.1 It is the foundation of all quantum physics, which includes quantum chemistry, quantum field theory, quantum technology, and quantum information science . Quantum mechanics can describe many systems that ...
1 天前 · Personal life Early years Paul Adrien Maurice Dirac was born at his parents' home in Bristol, England, on 8 August 1902, [41] and grew up in the Bishopston area of the city. [42] His father, Charles Adrien Ladislas Dirac, was an immigrant from Saint-Maurice, Switzerland, of French descent, [6] who worked in Bristol as a French teacher. . His mother, Florence Hannah Dirac, née Holten, was born ...
4 天前 · Dennis W. Sciama (1926–1999) – British physicist who played a major role in developing British physics after the Second World War. His most significant work was in general relativity, with and without quantum theory, and black holes.
2024年5月23日 · Sigma Corporation. Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories. All Sigma products are produced in the company's own Aizu factory in Bandai, Fukushima, Japan. Although Sigma produces several camera models, the company is best ...
