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Valley Forge

(Encyclopedia) Valley Forge, on the Schuylkill River, SE Pa., NW of Philadelphia. There, during the American Revolution, the main camp of the Continental Army was established (Dec., 1777–June, 1778)…

Treisman, Anne

(Encyclopedia) Treisman, Anne, 1935–2018, British cognitive psychologist, b. Anne Marie Taylor, Ph.D. Oxford, 1962. She taught at Oxford from 1968, the Univ. of British Columbia from 1978, Univ. of…

calculator

(Encyclopedia) calculator or calculating machine, device for performing numerical computations; it may be mechanical, electromechanical, or electronic. The electronic computer is also a calculator…

neural network

(Encyclopedia) neural network or neural computing, computer architecture modeled upon the human brain's interconnected system of neurons. Neural networks imitate the brain's ability to sort out…

Sidgwick, Henry

(Encyclopedia) Sidgwick, HenrySidgwick, Henrysĭjˈwĭk [key], 1838–1900, English philosopher. He studied at Trinity College, Cambridge, and taught moral philosophy there from 1869 until 1900. The basis…

electronics industry

(Encyclopedia) electronics industry, the business of creating, designing, producing, and selling devices such as radios, televisions, stereos, computers, semiconductors, transistors, and integrated…

semiconductor

(Encyclopedia) CE5 N-type and P-type crystals: In a pure silicon crystal each silicon atom (Si) is surrounded by four valence electrons. In the N-doped semiconductor, illustrated in the left-hand…

mainstreaming

(Encyclopedia) mainstreaming, in education, practice of teaching handicapped children in regular classrooms with nonhandicapped children to the fullest extent possible; such children may have…

chorus, in music

(Encyclopedia) chorus, in music, large group of singers performing in concert; a group singing liturgical music is a choir. The term chorus may also be used for a group singing or dancing together in…

Greene and Greene

(Encyclopedia) Greene and Greene, architectural firm working in the American arts and crafts style, formed by the brothers Charles Sumner Greene, 1868–1957, and Henry Mather Greene, 1870–1954, both b…