required momentum
91Canada — /kan euh deuh/, n. a nation in N North America: a member of the Commonwealth of Nations. 29,123,194; 3,690,410 sq. mi. (9,558,160 sq. km). Cap.: Ottawa. * * * Canada Introduction Canada Background: A land of vast distances and rich natural… …
92Isaac Newton — Sir Isaac Newton …
93Star — For other uses, see Star (disambiguation) …
94Mass driver — For fictional mass drivers, see List of electromagnetic projectile devices in fiction. Artist s conception of a mass driver for lunar launch A mass driver or electromagnetic catapult is a proposed method of non rocket spacelaunch which would use… …
95Physical theories modified by general relativity — This article will use the Einstein summation convention. The theory of general relativity required the adaptation of existing theories of physical, electromagnetic, and quantum effects to account for non Euclidian geometries. These physical… …
96Electronvolt — meV, keV, MeV, GeV, TeV, PeV, and BeV redirect here. For other uses, see MEV, KEV, GEV, TEV, PEV, and BEV. In physics, the electron volt (symbol eV; also written electronvolt[1][2]) is a unit of energy equal to approximately 1.602×10−19joule… …
97Blitzkrieg — (German for lightning war Audio|De blitzkrieg.ogg|listen) is a popular name for an offensive operational level military doctrine which involves an initial bombardment followed by the employment of motorized mobile forces attacking with speed and… …
98Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… …
99Universe — For other uses, see Universe (disambiguation). Physical cosmology …
100Vacuum — This article is about empty physical space or the absence of matter. For other uses, see Vacuum (disambiguation). Free space redirects here. For other uses, see Free space (disambiguation). Pump to demonstrate vacuum In everyday usage, vacuum is… …
