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1Einstein , Albert — (1879–1955) German–Swiss–American theoretical physicist Einstein was born at Ulm in Germany where his father was a manufacturer of electrical equipment. Business failure led his father to move the family first to Munich, where Einstein entered… …
2Tropical year — A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox,… …
3physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction the systematic study of the inorganic world …
4List of important publications in physics — Optics Book of Optics *Ibn al Haytham (Alhacen)Description: The Book of Optics (Arabic: Kitab al Manazir , Latin: De Aspectibus ) is a seven volume treatise on optics and physics, written by the Iraqi Arab Muslim scientist Ibn al Haytham… …
5Karl Schwarzschild — Infobox Scientist name = Karl Schwarzschild box width = image width =150px caption = Karl Schwarzschild (1873 1916) birth date = October 9, 1873 birth place = Frankfurt am Main death date = May 11, 1916 death place = residence = citizenship =… …
6Le Verrier , Urbain Jean Joseph — (1811–1877) French astronomer Born the son of a local government official in St. Lô, northern France, Le Verrier was educated at the Ecole Polytechnique and worked afterward on chemical problems with Joseph Gay Lussac. He became a lecturer in… …
7celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… …
8Mercury (planet) — Mercury  ☿ …
9Alternatives to general relativity — are physical theories that attempt to describe the phenomena of gravitation in competition to Einstein s theory of general relativity.There have been many different attempts at constructing an ideal theory of gravity. These attempts can be split… …
10Speed of gravity — In the context of classical theories of gravitation, the speed of gravity refers to the speed at which a gravitational field propagates. This is the speed at which changes in the distribution of energy and momentum result in noticeable changes in …
