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2 days ago · General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.
5 days ago · Bio: Robert Wald is Distinguished Contribution Professor in the Department of Physics at the University of Chicago. He was elected a member of the National Academy of Sciences in...
5 days ago · Robert Wald 是美国芝加哥大学物理系卓越贡献教授，2001年当选美国科学院院士，曾任芝加哥大学物理系主任，国际广义相对论及引力学会主席。 他出生于1947年，1968年获得哥伦比亚大学学士学位，1972年获得普林斯顿大学博士学位，1976年起在芝加哥大学任教。...
3 days ago · The starting point for string theory is the idea that the point-like particles of quantum field theory can also be modeled as one-dimensional objects called strings. [14] The interaction of strings is most straightforwardly defined by generalizing the perturbation theory used in ordinary quantum field theory.
Jul 4, 2024 · The theory called the theory of general relativity is a classical field theory that in physics describes the field of gravity. In general relativity, physical spacetime is modeled in terms of differential geometry as a Lorentzian manifold whose pseudo-Riemannian metric – or rather the Levi-Civita connection that corresponds to it ...
3 days ago · Ralph Waldo was the second of five sons who survived into adulthood; the others were William, Edward, Robert Bulkeley, and Charles. Three other children—Phoebe, John Clarke, and Mary Caroline—died in childhood.
1 day ago · Those who are able visit us in Amherst to get closer to that poetic voice. To understand where she was speaking from and to comprehend how she forged her powers of insight, creativity, and courage,” said Jane Wald, the Jane and Robert Keiter Family executive director for the Emily Dickinson Museum.
