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moment

(Encyclopedia) moment, in physics and engineering, term designating the product of a quantity and a distance (or some power of the distance) to some point associated with that quantity. The most…

acceleration

(Encyclopedia) acceleration, change in the velocity of a body with respect to time. Since velocity is a vector quantity, involving both magnitude and direction, acceleration is also a vector. In…

Brown, Charles Quinton, Jr.

(Encyclopedia) Brown, Charles Quinton, Jr., 1962–, American air force general, b. San Antonio, Tex., B.S Texas Tech Univ., 1984, M.S. Embry-Riddle Aeronautical Univ., 1994. An ROTC graduate, he was…

field, in physics

(Encyclopedia) field, in physics, region throughout which a force may be exerted; examples are the gravitational, electric, and magnetic fields that surround, respectively, masses, electric charges,…

Warner Robins

(Encyclopedia) Warner Robins, city (1990 pop. 43,726), Houston co., central Ga., in an agricultural region; inc. 1943. The surrounding area yields peanuts, grain, fruit, and livestock. There is…

Malmstrom Air Force Base

(Encyclopedia) Malmstrom Air Force BaseMalmstrom Air Force Basemälmˈstrəm, mălmˈ– [key], U.S. military installation, 3,573 acres (1,446 hectares), W central Mont., E of Great Falls; est. 1942. During…

Edwards Air Force Base

(Encyclopedia) Edwards Air Force Base, U.S. military installation, 301,000 acres (121,805 hectares), S Calif., NE of Lancaster; est. 1933. It is one of the largest air force bases in the United…

Langley Air Force Base

(Encyclopedia) Langley Air Force Base, U.S. military installation, 3,195 acres (1,293 hectares), SE Va., N of Hampton; est. 1917 and named for aviation pioneer Samuel P. Langley, amalgamated 2010…