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(Encyclopedia)bibliography. The listing of books is of ancient origin. Lists of clay tablets have been found at Nineveh and elsewhere; the library at Alexandria had subject lists of its books. Modern bibliography b...gravitation
(Encyclopedia)gravitation, the attractive force existing between any two particles of matter. The term gravitygravity is commonly used synonymously with gravitation, but in correct usage a definite distinction is...Newton's law of gravitation
(Encyclopedia)Newton's law of gravitation: see gravitation. ...Herschel
(Encyclopedia)Herschel hûrˈshəl [key], family of distinguished English astronomers. Sir William Herschel,Sir William Herschel, 1738–1822, born Friedrich Wilhelm Herschel, was a great pioneer in astronomy. Bor...gravity
(Encyclopedia)gravity: see gravitation.free fall
(Encyclopedia)free fall, in physics, the state of a body moving solely under the influence of gravitational forces (see gravitation). A body falling freely toward the surface of the earth undergoes an acceleration ...Sabin, Joseph
(Encyclopedia)Sabin, Joseph săbˈĭn [key], 1821–81, American bibliophile, b. England. Sabin came to the United States in 1848 and established himself as a dealer in rare books in New York City and Philadelphia....G
(Encyclopedia)G, 7th letter of the alphabet. It is a usual symbol for a voiced velar stop, as in the English go. It was originally a differentiated form of Greek gamma, which has C as its formal Roman correspondent...weak interactions
(Encyclopedia)weak interactions, actions between elementary particles mediated, or carried, by W and Z particles and that are responsible for nuclear decay. Weak interactions are one of four fundamental interaction...celestial mechanics
(Encyclopedia)celestial mechanics, the study of the motions of astronomical bodies as they move under the influence of their mutual gravitation. Celestial mechanics analyzes the orbital motions of planets, dwarf pl...Browse by Subject
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