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Toulouse-Lautrec, Henri de

(Encyclopedia)Toulouse-Lautrec, Henri de äNrēˈ də to͞olo͞ozˈ lōtrĕkˈ [key], 1864–1901, French painter and lithographer, b. Albi. Son of a wealthy nobleman, Lautrec fell and broke both legs when he was a...

quantum chromodynamics

(Encyclopedia)quantum chromodynamics (QCD), quantum field theory that describes the properties of the strong interactions between quarks and between protons and neutrons in the framework of quantum theory. Quarks p...

Peirce, Charles Sanders

(Encyclopedia)Peirce, Charles Sanders pûrs [key], 1839–1914, American philosopher and polymath, b. Cambridge, Mass., grad. Harvard, 1859; son of Benjamin Peirce. Except for occasional lectures he renounced the r...

utility, public

(Encyclopedia)utility, public, industry required by law to render adequate service in its field at reasonable prices to all who apply for it. Public utilities frequently operate as monopolies in their market. In th...

drill, tool

(Encyclopedia)drill, tool used to create a hole, usually in some hard substance, by its rotary or hammering action. Many different tools make up the drill family. The awl is a pointed instrument used for piercing s...

Columbia, cities, United States

(Encyclopedia)Columbia kəlŭmˈbēə [key]. 1 City (2020 pop. 104,681), Howard co., central Md., between W...

chromium

(Encyclopedia)chromium krōˈmēəm [key] [Gr.,=color], metallic chemical element; symbol Cr; at. no. 24; at. wt. 51.9961; m.p. about 1,857℃; b.p. 2,672℃; sp. gr. about 7.2 at 20℃; valence +2, +3, +6. Chromiu...

ironwork, ornamental

(Encyclopedia)ironwork, ornamental. The shaping of wrought iron, used almost exclusively until the 16th cent., is primarily an art of the blacksmith, who must work with the metal while it is at the desired stage of...

water bug

(Encyclopedia)water bug, name for a large number of water-living bugs, comprising several families of the order Hemiptera (true bugs). All have jointed, sharp, sucking beaks, breathe air, and undergo gradual metamo...

spintronics

(Encyclopedia)spintronics, spin electronics, or magnetoelectronics, science and technology that harnesses the spin state of electrons in addition to the electrical charge state to store data or perform calculation...