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sugar

(Encyclopedia)sugar, compound of carbon, hydrogen, and oxygen belonging to a class of substances called carbohydrates. Sugars fall into three groups: the monosaccharides, disaccharides, and trisaccharides. The mono...

adsorption

(Encyclopedia)adsorption, adhesion of the molecules of liquids, gases, and dissolved substances to the surfaces of solids, as opposed to absorption, in which the molecules actually enter the absorbing medium (see a...

sewerage

(Encyclopedia)sewerage, system for the removal and disposal of chiefly liquid wastes and of rainwater, which are collectively called sewage. The average person in the industrialized world produces between 60 and 14...

vacuum

(Encyclopedia)vacuum, theoretically, space without matter in it. A perfect vacuum has never been obtained; the best human-generated vacuums contain less than 100,000 gas molecules per cc, compared to about 30 billi...

Lange, Dorothea

(Encyclopedia)Lange, Dorothea, 1895–1965, American photographer, b. Hoboken, N.J. as Dorothea Nutzhorn, adopted her mother's maiden name in her twenties. From 1916 until 1932, Lange operated a portrait studio in ...

Raoult's law

(Encyclopedia)Raoult's law räo͞olzˈ [key] [for F. M. Raoult, a French physicist and chemist] states that the addition of solute to a liquid lessens the tendency for the liquid to become a solid or a gas, i.e., r...

Theodorakis, Mikis

(Encyclopedia) Theodorakis, Mikis , 1925-2021, Greek composer and politician, b. Chios island, Greece, Athens Conservatoire (1950). Theodorakis showed interest in mus...

Richter, Gerhard

(Encyclopedia)Richter, Gerhard gārˈhärt rĭkhˈtər [key], 1932–, German painter, b. Dresden, studied Academy of Fine Arts, Dresden (1951–56) and Düsseldorf (1961–63). Widely considered one of the foremos...

Dhaka

(Encyclopedia)Dhaka or Dacca both: dăkˈə [key], city (2021 est. pop. 10,356,500), capital of Bangladesh, on a ...

urea

(Encyclopedia)CE5 urea yo͝oēˈə [key], organic compound that is the principal end product of nitrogen metabolism in most mammals. Urea was the first animal metabolite to be isolated in crystalline form; its c...