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Hertz, Heinrich Rudolf

(Encyclopedia)Hertz, Heinrich Rudolf hĕrts [key], 1857–94, German physicist. He confirmed J. C. Maxwell's electromagnetic theory and in the course of experiments (1886–89) produced and studied electromagnetic...

Wolfe, Thomas Clayton

(Encyclopedia)Wolfe, Thomas Clayton, 1900–1938, American novelist, b. Asheville, N.C., grad. Univ. of North Carolina, 1920, M.A. Harvard, 1922. An important 20th-century American novelist, Wolfe wrote four mammot...

Gibbs, Josiah Willard

(Encyclopedia)Gibbs, Josiah Willard, 1839–1903, American mathematical physicist, b. New Haven, Conn., grad. Yale, 1858. He studied abroad and was professor of mathematical physics at Yale from 1871. His great con...

letters

(Encyclopedia)letters, in literature, written messages, ranging from those addressed to the public and those sent from lover to lover, to business letters and thank-you notes. The common quality they share is a liv...

John of Austria, 1545–78, Spanish admiral and general

(Encyclopedia)John of Austria, 1545–78, Spanish admiral and general; illegitimate son of Holy Roman Emperor Charles V. He was acknowledged in his father's will and was recognized by his half-brother, Philip II of...

Robert II, duke of Normandy

(Encyclopedia)Robert II (Robert Curthose), c.1054–1134, duke of Normandy (1087–1106); eldest son of King William I of England. Aided by King Philip I of France, he rebelled (1077) against his father. Father and...

statistical mechanics

(Encyclopedia)statistical mechanics, quantitative study of systems consisting of a large number of interacting elements, such as the atoms or molecules of a solid, liquid, or gas, or the individual quanta of light ...

Leicester, Robert Dudley, earl of

(Encyclopedia)Leicester, Robert Dudley, earl of lĕsˈtər [key], 1532?–1588, English courtier and favorite of Queen Elizabeth I. A younger son of John Dudley, duke of Northumberland, he was early brought into th...

Ker, Robert, earl of Somerset

(Encyclopedia)Ker, Robert, earl of Somerset: see Somerset, Robert Carr, earl of. ...

De Niro, Robert Anthony Jr.

(Encyclopedia) De Niro, Robert Anthony, Jr., 1943-, American film actor and director, b. New York, N.Y. Both of De Niro’s parents were painters; De Niro was raised...