- Mach's principle
the proposition that there is no absolute space and that the inertia and acceleration of a body are determined by all of the matter of the universe.[after E. MACH]
* * *Hypothesis that the inertial forces acting on a body in accelerated motion are determined by the quantity and distribution of matter in the universe.Albert Einstein found its suggested connection between geometry and matter helpful in formulating his theory of general relativity; unaware that George Berkeley had proposed similar views in the 18th century, he attributed the idea to Ernst Mach. He abandoned the principle when he realized that inertia is assumed in the geodesic equation of motion (see geodesy) and need not depend on the existence of matter elsewhere in the universe.
* * *in cosmology, hypothesis that the inertial forces experienced by a body in nonuniform motion are determined by the quantity and distribution of matter in the universe. It was so called by Albert Einstein (Einstein, Albert) after the 19th-century Austrian physicist and philosopher Ernst Mach. Einstein found the hypothesis helpful in formulating his theory of general relativity—i.e., it was suggestive of a connection between geometry and matter—and attributed the idea to Mach, unaware that the English philosopher George Berkeley (Berkeley, George) had proposed similar views during the 1700s. (Berkeley had argued that all motion, both uniform and nonuniform, was relative to the distant stars.) Einstein later abandoned the principle when it was realized that inertia is implicit in the geodesic equation of motion and need not depend on the existence of matter elsewhere in the universe.
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Mach's principle — In theoretical physics, particularly in discussions of , Mach s principle (or Mach s conjecture [Hans Christian Von Baeyer, The Fermi Solution: Essays on Science , Courier DoverPublications (2001), ISBN 0486417077,… … Wikipedia
Mach's principle — Physics. the proposition that there is no absolute space and that the inertia and acceleration of a body are determined by all of the matter of the universe. [after E. MACH] … Useful english dictionary
Mach's principle — noun the principle that the inertia of a body arises from its relation to the totality of all other bodies in the universe … Wiktionary
Mach's principle — The physical principle that the inertia of a body in a system is determined by the distribution of mass and energy in the rest of the system … Philosophy dictionary
Mach's principle — noun Physics the hypothesis that a body s inertial mass results from its interaction with the rest of the matter in the universe … English new terms dictionary
Mach principle — In theoretical physics, particularly in discussions of , a Mach principle is any of a class of principles which are more specific statements of Mach s principle.The broad notion is that mass there influences inertia here . Any statement which… … Wikipedia
Mach, Ernst — born Feb. 18, 1838, Chirlitz Turas, Moravia died Feb. 19, 1916, Haar, Ger. Austrian physicist and philosopher. After earning a doctorate in physics in 1860, he taught at the Universities of Vienna and Graz as well as Charles University in Prague … Universalium
Mach , Ernst — (1838–1916) Austrian physicist Mach, who was born at Turas (now in the Czech Republic), had a somewhat unorthodox upbringing and education. His father was a man knowledgable in both the classics and the sciences who retired to farm near Vienna… … Scientists
principle — /prin seuh peuhl/, n. 1. an accepted or professed rule of action or conduct: a person of good moral principles. 2. a fundamental, primary, or general law or truth from which others are derived: the principles of modern physics. 3. a fundamental… … Universalium
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