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stannic

(Encyclopedia)stannic: a chemical compound containing tin in the +4 valence state. ...

stannous

(Encyclopedia)stannous: a chemical compound containing tin in the +2 valence state. ...

designer drug

(Encyclopedia)designer drug, chemical substance synthesized in a laboratory that is intended to have effects similar to those of a drug that is a controlled substance, such as methamphetamine, marijuana, LSD, or an...

stellar evolution

(Encyclopedia)CE5 The above Hertzsprung-Russell (H-R) diagram shows the track of stellar evolution for a typical star. After spending much of its life evolving toward or along the main sequence, the star becomes...

CN (tear gas)

(Encyclopedia)CN, ordinary tear gas. The chemical name for CN is chloroacetophenone. ...

Monroeville

(Encyclopedia)Monroeville, borough (1990 pop. 29,169), Allegheny co., SW Pa., a suburb of Pittsburgh; settled 1810, inc. 1952. It is primarily residential, with a major shopping mall. Monroeville has chemical and n...

Crookes, Sir William

(Encyclopedia)Crookes, Sir William, 1832–1919, English chemist and physicist. After serving at the Radcliffe Observatory, Oxford, and teaching chemistry at Chester Training College, he retired to work in his own ...

Pople, Sir John Anthony

(Encyclopedia)Pople, Sir John Anthony pōpˈəl [key], 1925–2004, British computational chemist. Trained as a mathematician at Cambridge (B.A. 1946, Ph.D. 1951), he worked at Cambridge (1951–58) and England's N...

Ikeda, Hayato

(Encyclopedia)Ikeda, Hayato häyäˈtō ēkāˈdä [key], 1899–1965, Japanese political leader, prime minister (1960–64). After serving as an official in the finance ministry (1925–48) he entered politics, ga...

Laing, R. D.

(Encyclopedia)Laing, R. D. (Ronald David Laing) lăng [key], 1927–89, British psychiatrist. After studying at Univ. of Glasgow (M.D., 1951), he taught there (1953–56), later moving to the Tavistock Clinic and I...