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In physics the Einstein-aether theory, also called aetheory, is the name coined in 2004 for a modification of general relativity that has a preferred reference frame and hence violates Lorentz invariance. These generally covariant theories describes a spacetime endowed with both a metric and a unit timelike vector field named the aether.
Ratan Shankar Mishra (1918–1999) was an Indian mathematician and academic who was known for his solutions to the Unified fluid theory of Albert Einstein. [1] He headed the department of Mathematics of the University of Gorakhpur (1958) and University of Allahabad (1963-1968) and served as the vice chancellor of Lucknow University (1982-1985), [2] as the reader at University of Delhi (1954 ...
Einstein showed how the velocity of light in a moving medium is calculated, in the velocity-addition formula of special relativity. Einstein's theory of general relativity provides the solution to the other light-dragging effects, whereby the velocity of light is modified by the motion or the rotation of nearby masses.
The results of various experiments, including the Michelson–Morley experiment in 1887 (subsequently verified with more accurate and innovative experiments), led to the theory of special relativity, by showing that the aether did not exist. [20] Einstein's solution was to discard the notion of an aether and the absolute state of rest.
As historians such as John Stachel argue, Einstein's views on the "new aether" are not in conflict with his abandonment of the aether in 1905. As Einstein himself pointed out, no "substance" and no state of motion can be attributed to that new aether. [10] Einstein's use of the word "aether" found little support in the scientific community, and ...
Svetlana Dali, the woman accused of stowing away on a flight from New York to Paris, was arrested again, according to the FBI.
Given the difficulty of constructing explicit small families of solutions, much less presenting something like a "general" solution to the Einstein field equation, or even a "general" solution to the vacuum field equation, a very reasonable approach is to try to find qualitative properties which hold for all solutions, or at least for all ...
Jennifer Lopez looked stunning in a transparent Zuhair Murad gown at the 2024 Governors Awards in Los Angeles.