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Black, Timuel Dixon, Jr.

(Encyclopedia) Black, Timuel Dixon, Jr., 1918-2021, American social activist and community organizer, b. Birmingham, Al., Roosevelt Univ. (B.A., 1952), Univ. of ...

Néel, Louis Eugène Félix

(Encyclopedia)Néel, Louis Eugène Félix, 1904–2000, French physicist, Ph.D. Univ. of Strasbourg, 1932. He was a professor at the Univ. of Strasbourg from 1932 to 1945, when he joined the faculty at the Univ. of...

Raman, Sir Chandrasekhara Venkata

(Encyclopedia)Raman, Sir Chandrasekhara Venkata chŭnˈdrəsĕkärə vĕngˈkətə räˈmən [key], 1888–1970, Indian physicist. He was professor of physics at Calcutta Univ. from 1917 to 1933. In Bangalore (now ...

Lizard, The

(Encyclopedia)Lizard, The, peninsula, Cornwall, SW England. Its southern extremity (the southernmost point of Great Britain) is called Lizard Point or Lizard Head. The coast has colored serpentine rocks, small cove...

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...

Dione, in astronomy

(Encyclopedia)Dione dīōˈnē [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn IV (or S4), Dione is 695 mi (1,120 km) in diameter, orbits Saturn at a mean distanc...

e, in mathematics

(Encyclopedia)e, in mathematics, irrational number occurring widely in mathematics and science, approximately equal to the value 2.71828; it is the base of natural, or Naperian, logarithms. The number e is defined ...