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strength of materials

(Encyclopedia)strength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an e...

Boudin, Eugène Louis

(Encyclopedia)Boudin, Eugène Louis özhĕnˈ lwē bo͞odăNˈ [key], 1824–98, French painter. He began painting at 25 in Paris. His best-known paintings are beach scenes of Brittany, Normandy, and the Netherland...

parapsychology

(Encyclopedia)parapsychology, study of mental phenomena not explainable by accepted principles of science. The organized, scientific investigation of paranormal phenomena began with the foundation (1882) of the Soc...

Somerset, Robert Carr, earl of

(Encyclopedia)Somerset, Robert Carr, earl of, 1587?–1645, Scottish favorite of James I of England. His family name also appears as Ker. He may have accompanied James to England as a page in 1603, but he appears t...

Ruisdael, Jacob van

(Encyclopedia)Ruisdael or Ruysdael, Jacob van both: yäˈkōp vän roisˈdäl [key], c.1628–1682, Dutch painter and etcher, the most celebrated of the Dutch landscape painters. He studied with his father Isack an...

Hovhaness, Alan

(Encyclopedia)Hovhaness, Alan hōvhäˈnəs [key], 1911–2000, American composer, b. Somerville, Mass., as Alan Vaness Chakmakjian. Hovhaness was of Armenian and Scottish descent, and many of his works are based o...

energy, sources of

(Encyclopedia)energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other applications. The develop...

Fairfax of Cameron, Thomas Fairfax, 3d Baron

(Encyclopedia)Fairfax of Cameron, Thomas Fairfax, 3d Baron, 1612–71, English general. He was the son of Ferdinando Fairfax, 2d Baron Fairfax of Cameron (1584–1648), whose title he inherited and under whom he fo...

Friends, Religious Society of

(Encyclopedia)Friends, Religious Society of, religious body originating in England in the middle of the 17th cent. under George Fox. The members are commonly called Quakers, originally a term of derision. The org...

states of matter

(Encyclopedia)states of matter, forms of matter differing in several properties because of differences in the motions and forces of the molecules (or atoms, ions, or elementary particles) of which they are composed...