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typography

(Encyclopedia)typography tīpŏgˈrəfē [key], the art of printing from movable type. The term typographer is today virtually synonymous with a master printer skilled in the techniques of type and paper stock sele...

Wright brothers

(Encyclopedia)Wright brothers, American airplane inventors and aviation pioneers. Orville Wright 1871–1948, was born in Dayton, Ohio, and Wilbur Wright, 1867–1912, near New Castle, Ind. Their interest in aviati...

Samuel

(Encyclopedia)Samuel, two books of the Bible, originally a single work, called First and Second Samuel in modern Bibles, and First and Second Kingdoms in the Septuagint. They are considered part of “Deuteronomist...

Sinclair, Upton

(Encyclopedia)Sinclair, Upton (Upton Beall Sinclair), 1878–1968, American novelist and socialist activist, b. Baltimore, grad. College of the City of New York, 1897. He was one of the muckrakers, and a dedication...

denaturation

(Encyclopedia)denaturation, term used to describe the loss of native, higher-order structure of protein molecules in solution. Most globular proteins exhibit complicated three-dimensional folding described as secon...

chiropractic

(Encyclopedia)chiropractic kīrəprăkˈtĭk [key] [Gr.,=doing by hand], medical practice based on the theory that all disease results from a disruption of the functions of the nerves. The principal source of inter...

hydrazine

(Encyclopedia)hydrazine hīˈdrəzēnˌ [key], chemical compound, formula NH2NH2, m.p. 1.4℃, b.p. 113.5℃, specific gravity 1.011 at 15℃. It is very soluble in water and soluble in alcohol. At ordinary tempera...

Kipling, Rudyard

(Encyclopedia)Kipling, Rudyard, 1865–1936, English author, b. Bombay (now Mumbai), India. Educated in England, Kipling returned to India in 1882 and worked as an editor on a Lahore paper. His early poems were col...

plasma

(Encyclopedia)plasma, in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magn...

vibration

(Encyclopedia)vibration, in physics, commonly an oscillatory motion—a movement first in one direction and then back again in the opposite direction. It is exhibited, for example, by a swinging pendulum, by the pr...