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Sitter, Willem de

(Encyclopedia)Sitter, Willem de vĭlˈəm də sĭtˈər [key], 1872–1934, Dutch astronomer and mathematician. He was professor from 1908 at the Univ. of Leiden and in 1919 became director of its observatory. His ...

cadaverine

(Encyclopedia)cadaverine: see decay of organic matter. ...

putrefaction

(Encyclopedia)putrefaction: see decay of organic matter. ...

putrescine

(Encyclopedia)putrescine: see decay of organic matter. ...

dualism

(Encyclopedia)dualism, any philosophical system that seeks to explain all phenomena in terms of two distinct and irreducible principles. It is opposed to monism and pluralism. In Plato's philosophy there is an ulti...

condensate

(Encyclopedia)condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose their separate ident...

Fitch, Val Logsdon

(Encyclopedia)Fitch, Val Logsdon, 1923–2015, American nuclear physicist, b. Merriman, Neb., Ph.D. Columbia, 1954. During World War II Fitch was drafted into the army and worked on the detonator for the atomic bom...

embolus

(Encyclopedia)embolus ĕmˈbələs [key], foreign matter circulating in and obstructing a blood vessel. It may be a portion of a clot that has separated from the wall of a vessel (see thrombosis), a bubble of gas o...

Haldane, Frederick Duncan Michael

(Encyclopedia)Haldane, Frederick Duncan Michael, 1951–, British physicist, b. London, England, Ph.D. Cambridge, 1978. Haldane taught at the Univ. of Southern California (1981–85, 1987–90) and worked at Bell L...

conscience

(Encyclopedia)conscience, sense of moral awareness or of right and wrong. The concept has been variously explained by moralists and philosophers. In the history of ethics, the conscience has been looked upon as the...