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Perutz, Max Ferdinand

(Encyclopedia)Perutz, Max Ferdinand, 1914–2002, British molecular biologist, b. Vienna. One of the pioneers in the field of molecular biology, Perutz studied chemistry at the Univ. of Vienna (1932–36) and then ...

Herschbach, Dudley Robert

(Encyclopedia)Herschbach, Dudley Robert hûrshˈbăk [key], 1932–, American chemist, b. San Jose, Calif., Ph.D. Harvard, 1958. In 1986, Herschbach shared the Nobel Prize in Chemistry with Yuan T. Lee and John C. ...

chickpea

(Encyclopedia)chickpea, annual plant (Cicer arietinum) of the family Leguminosae (pulse family), cultivated since antiquity for the somewhat pealike seeds, which are often used as food and forage, principally in In...

density

(Encyclopedia)density, ratio of the mass of a substance to its volume, expressed, for example, in units of grams per cubic centimeter or pounds per cubic foot. The density of a pure substance varies little from sam...

Stanley, William Meredith

(Encyclopedia)Stanley, William Meredith, 1904–71, American biochemist, b. Ridgeville, Ind., Ph.D. Univ. of Illinois, 1929. He was a professor at the Rockefeller Institute for Medical Research (now Rockefeller Uni...

antibiotic

(Encyclopedia)antibiotic, any of a variety of substances, usually obtained from microorganisms, that inhibit the growth of or destroy certain other microorganisms. Although for centuries preparations derived from ...

expansion

(Encyclopedia)expansion, in physics, increase in volume resulting from an increase in temperature. Contraction is the reverse process. When heat is applied to a body, the rate of vibration and the distances between...

Sauvage, Jean-Pierre

(Encyclopedia)Sauvage, Jean-Pierre, 1944–, French chemist, Ph.D. Univ. of Strasbourg, 1971. He has spent his entire career as a researcher at the National Center for Scientific Research and a professor at the Uni...

Dubos, René Jules

(Encyclopedia)Dubos, René Jules rənāˈ zhül dübōˈ [key], 1901–82, American bacteriologist, b. France, Ph.D. Rutgers, 1927. He joined the Rockefeller Institute (now Rockefeller Univ.) in 1927 and became pro...

biochemistry

(Encyclopedia)biochemistry, science concerned chiefly with the chemistry of biological processes; it attempts to utilize the tools and concepts of chemistry, particularly organic and physical chemistry, for elucida...