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kapok

(Encyclopedia)kapok kāˈpŏk, kăpˈək [key], name for a tropical tree of the family Bombacaceae (bombax family) and for the fiber (floss) obtained from the seeds in the ripened pods. The floss has been important...

stun gun

(Encyclopedia)stun gun, hand-held electronic device that produces a high-voltage pulse that can immobilize a person for several minutes with no permanent damage in most cases. It is powered by ordinary batteries, w...

Snead, Sam

(Encyclopedia)Snead, Sam (Samuel Jackson Snead) snēd [key], 1912–2002, American golfer, b. Ashwood, Va. An outstanding high school athlete, he turned to golf after injuring a hand as a football player. He attrac...

Zanesville

(Encyclopedia)Zanesville, city (1990 pop. 26,778), seat of Muskingum co., central Ohio, on the Muskingum River at its junction with the Licking River; inc. 1815. It is a trade and industrial center that manufacture...

Koons, Jeff

(Encyclopedia)Koons, Jeff, 1955–, American artist, b. York, Pa., studied Maryland Institute College of Art (B.F.A., 1976), Art Institute of Chicago. He moved to New York City in 1977 and has lived and worked ther...

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 figure, some sil...

pulley

(Encyclopedia)CE5 Pulleys: The mechanical advantage (MA) of a system of pulleys is equal to the number of supporting strands: in A MA=1 and in B MA=2. pulley, simple machine consisting of a wheel over which a r...

Pali canon

(Encyclopedia)Pali canon päˈlē [key], sacred literature of Buddhism. The texts in the Pali canon are the earliest Buddhist sources, and for Theravada Buddhists, who claim to conserve the original teachings of th...

McCormick, Cyrus Hall

(Encyclopedia)McCormick, Cyrus Hall, 1809–84, inventor of the reaper, b. Rockbridge co., Va. His father, Robert McCormick (1780–1846), had worked intermittently for over 20 years at his blacksmith shop on a rea...

koan

(Encyclopedia)koan kōˈän [key] [Jap.,=public question; Chin. kung-an], a subject for meditation in Ch'an or Zen Buddhism, usually one of the sayings of a great Zen master of the past. In the formative period of ...