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relativity

(Encyclopedia) relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of…

The Crisis

by Carrie Chapman Catt I have taken for my subject, "The Crisis," because I believe that a crisis has come in our movement which, if recognized and the opportunity seized with vigor,…

moon

(Encyclopedia) CE5 The moon: Near side CE5 The moon: Far side moon, natural satellite of a planet (see satellite, natural) or dwarf planet, in particular, the single natural satellite of the…

Italian literature

(Encyclopedia) Italian literature, writings in the Italian language, as distinct from earlier works in Latin and French. In the second half of the 19th cent. Francesco De Sanctis, literary critic…

Milton, John

(Encyclopedia) Milton, John, 1608–74, English poet, b. London, one of the greatest poets of the English language. Milton's theology, although in the Protestant tradition, is extremely…

sun, in astronomy

(Encyclopedia) CE5 Structure of the sun sun, intensely hot, self-luminous body of gases at the center of the solar system. Its gravitational attraction maintains the planets, comets, and other…

physics

(Encyclopedia) physics, branch of science traditionally defined as the study of matter, energy, and the relation between them; it was called natural philosophy until the late 19th cent. and is still…

John Milton - Paradise Lost: Book V

Book V Now Morn her rosie steps in th' Eastern Clime Advancing, sow'd the Earth with Orient Pearle, When ADAM wak't, so customd, for his sleep Was Aerie light, from pure digestion bred, And…

mathematics

(Encyclopedia) mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the…