law of precession
91geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …
92Einstein , 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… …
93Angular momentum — For a generally accessible and less technical introduction to the topic, see Introduction to angular momentum. Classical mechanics Newton s Second Law …
94Spacetime — For other uses of this term, see Spacetime (disambiguation). Two dimensional analogy of spacetime distortion. Matter changes the geometry of spacetime, this (curved) geometry being interpreted as gravity. White lines do not represent the… …
95Conservative force — Classical mechanics Newton s Second Law History of classical mechanics  …
96Daylight saving time — This article is about daylight saving time in general. For DST in a specific location, see Daylight saving time by country. Summer time and DST redirect here. For other uses, see Summer time (disambiguation) and DST (disambiguation) …
97Abbasid Caliphate — For the Caliphate of Córdoba (Al Andalus) dynasty see Abbadids; for the southwest Arabia Islamic sect, see Abādites. Abbasid Caliphate الخلافة العباسية al khilāfah al ‘abbāsīyyah …
98Introduction to general relativity — General relativity (GR) is a theory of gravitation that was developed by Albert Einstein between 1907 and 1915. According to general relativity, the observed gravitational attraction between masses results from the warping of space and time by… …
99The Mechanical Universe — Infobox Television show name = The Mechanical Universe caption = format = Physics camera = picture format = audio format = runtime = creator = Dr. James F. Blinn developer = producer = executive producer = starring = Dr. David Goodstein narrated …
100Alternatives 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… …
