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Mourou, Gérard Albert

(Encyclopedia)Mourou, Gérard Albert, 1944–, French physicist, Ph.D. Pierre and Marie Curie Univ. (now part of Sorbonne Univ.), 1973. Mourou was a professor at the Univ. of Rochester, New York, from 1977 to 1988,...

Brinton, Crane

(Encyclopedia)Brinton, Crane (Clarence Crane Brinton), 1898–1968, American historian, b. Winsted, Conn. He received his Ph.D. from Oxford in 1923 and began teaching at Harvard the same year, becoming full profess...

baud

(Encyclopedia)baud bôd, bōd [key], measure of the rate at which signals are transmitted over a telecommunications link. It is equivalent to the number of elements or pulses transmitted in one second, e.g., in com...

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...

Cruveilhier, Jean

(Encyclopedia)Cruveilhier, Jean zhäN krüvĕyāˈ [key], 1791–1874, French physician. The first professor of pathology at the Univ. of Paris (from 1836), he introduced the descriptive method into the study of th...

eider, in zoology

(Encyclopedia)eider: see duck.

diet, in nutrition

(Encyclopedia)diet, food and drink regularly consumed for nourishment. Nutritionists generally recommend eating a wide variety of foods; however, some groups of people survive on a very limited diet. The traditiona...

dike, in technology

(Encyclopedia)dike, in technology: see levee.

dimension, in mathematics

(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...

dimension, in physics

(Encyclopedia)dimension, in physics, an expression of the character of a derived quantity in relation to fundamental quantities, without regard for its numerical value. In any system of measurement, such as the met...