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division, in mathematics

(Encyclopedia) division, fundamental operation in arithmetic; the inverse of multiplication. Division may be indicated by the symbol ÷, as in 15 ÷ 3, or simply by a fraction, 15/3. The number that is…

verb

(Encyclopedia) verb, part of speech typically used to indicate an action. English verbs are inflected for person, number, tense and partially for mood; compound verbs formed with auxiliaries (e.g.,…

proton

(Encyclopedia) proton, elementary particle having a single positive electrical charge and constituting the nucleus of the ordinary hydrogen atom. The positive charge of the nucleus of any atom is due…

decimal system

(Encyclopedia) decimal system [Lat.,=of tenths], numeration system based on powers of 10. A number is written as a row of digits, with each position in the row corresponding to a certain power of 10…

fraction

(Encyclopedia) fraction [Lat.,=breaking], in arithmetic, an expression representing a part, or several equal parts, of a unit. When fractions having the same denominator, as 3&fslsh;10 and 4…

Internet, the

(Encyclopedia) Internet, the, international computer network linking together thousands of individual networks at military and government agencies, educational institutions, nonprofit organizations,…

atom

(Encyclopedia) CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)],…

ring, mathematical system

(Encyclopedia) ring, in mathematics, system consisting of a set R of elements and two binary operations, such that addition makes R a commutative group and multiplication is associative and…

Bartolommeo di Pagholo del Fattorino, Fra

(Encyclopedia) Bartolommeo di Pagholo del Fattorino, FraBartolommeo di Pagholo del Fattorino, Frafrä bärtōlōmĕˈō dē päˈgōlō dĕl fätˌtōrēˈnō [key], 1475–1517, Italian painter, also called Baccio della…

Adler, Cyrus

(Encyclopedia) Adler, CyrusAdler, Cyrusădˈlər [key], 1863–1940, American Jewish educator, grad. Univ. of Pennsylvania, 1883, Ph.D. Johns Hopkins, 1887. He taught Semitic languages at Johns Hopkins…