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May 31, 2024 · In the 6th century CE, the Byzantine Alexandrian scholar John Philoponus proposed the theory of impetus, which modifies Aristotle's theory that "continuation of motion depends on continued action of a force" by incorporating a causative force which diminishes over time.
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.
22 hours ago · 1902 – Paul Gerber explains the movement of the perihelion of Mercury using finite speed of gravity. His formula, at least approximately, matches the later model from Einstein's general relativity, but Gerber's theory was incorrect. 1902 – Henri Poincaré questions the concept of simultaneity.
May 30, 2024 · One year later, Einstein cast his gaze much farther and much wider. He recognized that his theory was not limited to the principles that govern the motion of objects (including beams of light)...
May 26, 2024 · We outline the essential features of the adiabatic theory and demonstrate how test particle motion in general relativity may be investigated using it. The theory relies on adiabatic invariants and vector elements of the orbits.
May 31, 2024 · In work carried out in the 1950s and 60s, mathematician Yvonne Choquet-Bruhat proved that Einstein’s equations can give rise to gravitational waves and that such waves travel at a finite...
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May 28, 2024 · Kepler's first law. Key People: Johannes Kepler. Related Topics: celestial mechanics. Kepler’s second law of planetary motion. Kepler’s first law of planetary motion. Kepler’s third law of planetary motion. (Show more) Top Questions. What does Kepler’s first law mean? What is eccentricity and how is it determined?
