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In physics, theories of gravitation postulate mechanisms of interaction governing the movements of bodies with mass. There have been numerous theories of gravitation since ancient times. The first extant sources discussing such theories are found in ancient Greek philosophy.
Theory of Gravity, such as the notions of Space, of Time, of Motion, of Mass, in its Inertial, Active Gravitational and Passive Gravitational form, of the Inertial system of reference, of the Force, of the Field, of the Riemannian Geometry and of the Field Equations. These primary fundamental theoretical and structural notions appearing each ...
13 wrz 2016 · We recount the journey of predicting and finding those waves, since its beginning in the early twentieth century, their prediction by Einstein in 1916, theoretical and experimental blunders,...
1955-56 – Robert Kraichnan shows that under the appropriate assumptions, Einstein's field equations of gravitation arise from the quantum field theory of a massless spin-2 particle coupled to the stress-energy tensor.
3 lut 1997 · Einstein’s General Theory of Relativity, published in November 1915, led to the prediction of the existence of gravitational waves that would be so faint and their interaction with matter so weak that Einstein himself wondered if they could ever be discovered.
The first direct observational detection of gravitational waves by the Laser Interferometer Gravitational-Wave Observatory (LIGO) consortium on September 14, 2015, was a momentous event in the history of science.
10 gru 2018 · In 1915, a little over 100 years ago, Einstein published the General Theory of Relativity (GR), 1, 2 a new theory of gravitation which replaced the Newtonian force by the idea that mass distorts the geometry of space and the flow of time. Matter then moves in this new space-time along the shortest four-dimensional paths.
