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number-average molecular weight

(Encyclopedia)number-average molecular weight: see molecular weight. ...

weight-average molecular weight

(Encyclopedia)weight-average molecular weight: see molecular weight. ...

Hobhouse, Leonard Trelawney

(Encyclopedia)Hobhouse, Leonard Trelawney, 1864–1929, English philosopher, sociologist, and journalist. He taught at Oxford and at the Univ. of London. Hobhouse sought to show with evidence from anthropology and ...

isomer

(Encyclopedia)isomer īˈsəmər [key], in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of ...

Goldschmidt, Richard Benedikt

(Encyclopedia)Goldschmidt, Richard Benedikt, 1878–1958, American zoologist and geneticist, b. Germany, Ph.D. Univ. of Heidelberg, 1902. Goldschmidt taught at the Univ. of Munich (1903–14) and was at the Kaiser ...

de Vries, Hugo

(Encyclopedia)de Vries, Hugo hüˈgō də vrēs [key], 1848–1935, Dutch botanist. He opened a new approach to the study of evolution by using the experimental method to investigate the processes of evolution. His...

ideal gas

(Encyclopedia)ideal gas: see gas laws; kinetic-molecular theory of gases. ...

photochemistry

(Encyclopedia)photochemistry, study of chemical processes that are accompanied by or catalyzed by the emission or absorption of visible light or ultraviolet radiation. A molecule in its ground (unexcited) state can...

Anfinsen, Christian Boehmer

(Encyclopedia)Anfinsen, Christian Boehmer, 1916–95, American biochemist, b. Monessen, Pa., Ph.D. Harvard Medical School, 1943. He spent the early years of his career in brief research and fellowship positions at ...

Walker, Sir John Ernest

(Encyclopedia)Walker, Sir John Ernest, 1941–, English biochemist, Ph.D. Oxford, 1969. He has been a researcher at the Medical Research Council Laboratory of Molecular Biology in Cambridge since 1974. In 1997 Walk...