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Ebbers, Bernie

(Encyclopedia)Ebbers, Bernie (Bernard John Ebbers), 1941–, American business executive and white-collar criminal, b. Edmonton, Alta, grad. Mississippi College (1967). After running a small motel chain, he entered...

king snake

(Encyclopedia)king snake, name for a number of species of the genus Lampropeltis, nonvenomous, egg-laying, constricting snakes of North America which show much variation in color and markings. The common king snake...

perfluoroalkyl and polyfluoroalkyl substances

(Encyclopedia)perfluoroalkyl and polyfluoroalkyl substances (PFAS), a group of several thousand synthetic organic chemical compounds made up of a chain of carbon atoms bonded to fluorine atoms. PFAS, which resist w...

art history

(Encyclopedia)art history, the study of works of art and architecture. In the mid-19th cent., art history was raised to the status of an academic discipline by the Swiss Jacob Burckhardt, who related art to its cul...

Siebold

(Encyclopedia)Siebold tāˈōdōr ĕrnst [key], 1804–85, also a physician, was one of the foremost biologists of his time. He specialized in the comparative anatomy of invertebrates and wrote the first volume (18...

Humphrey, Hubert Horatio

(Encyclopedia)Humphrey, Hubert Horatio, 1911–78, U.S. Vice President (1965–69), b. Wallace, S.Dak. After practicing pharmacy for several years, Humphrey taught political science and became involved in state pol...

Langmuir, Irving

(Encyclopedia)Langmuir, Irving lăngˈmyo͞or [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric Company, he introduced atomic-hydrog...

Chrysophyta

(Encyclopedia)Chrysophyta krəsŏfˈətə [key], phylum (division) of unicellular marine or freshwater organisms of the kingdom Protista consisting of the diatoms (class Bacillariophyceae), the golden, or golden-br...

psychrometer

(Encyclopedia)psychrometer sīkrŏmˈĭtər [key], one of many instruments used for measuring the water vapor content or relative humidity of the atmosphere. It consists of two identical thermometers—the wet-bulb...

Frisian Islands

(Encyclopedia)Frisian Islands frĭzhˈən [key], chain of low-lying islands, off the coasts of the Netherlands, Germany, and Denmark, in the North Sea. The West Frisian Islands, also known as the Wadden Islands, be...