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Millikan, Robert Andrews

(Encyclopedia)Millikan, Robert Andrews mĭlˈĭkən [key], 1868–1953, American physicist and educator, b. Morrison, Ill., grad. Oberlin College, 1891, Ph.D. Columbia, 1895, studied in Germany. He taught (1896–1...

trilobite

(Encyclopedia)CE5 Dorsal view of a trilobite trilobite trīˈləbītˌ [key], subphylum of the phylum Arthropoda that includes a large group of extinct marine animals that were abundant in the Paleozoic era. Th...

multiculturalism

(Encyclopedia)multiculturalism or cultural pluralism, a term describing the coexistence of many cultures in a locality, without any one culture dominating the region. By making the broadest range of human differenc...

Manitoba, University of

(Encyclopedia)Manitoba, University of, at Winnipeg, Man., Canada; provincially supported, coeducational; chartered 1877. It has faculties of arts and sciences, graduate studies, law, medicine, dentistry, pharmacy, ...

water table

(Encyclopedia)water table, the top zone of soil and rock in which all voids are saturated with water. The level of the water table varies with topography and climate, and depends on the degree to which the groundwa...

Davidson, Donald Herbert

(Encyclopedia)Davidson, Donald Herbert, 1917–2003, American philosopher, b. Springfield, Mass., grad. Harvard (B.A., 1939; Ph.D., 1949). A student of W. V. Quine, Davidson emerged as one of the major figures in p...

Axel, Richard

(Encyclopedia)Axel, Richard ăkˈsĕl [key], 1946–, American pathologist and biochemist, b. New York City, M.D. Johns Hopkins, 1970. A professor at Columbia from 1978, Axel was awarded, with Linda B. Buck, the 20...

Pap test

(Encyclopedia)Pap test, Pap smear, or Papanicolaou test păpˌənēˈkəlou [key], medical procedure used to detect cancer of the uterine cervix (see uterus). A scraping, brushing, or smear, is taken from the surf...

ultrasonics

(Encyclopedia)ultrasonics, study and application of the energy of sound waves vibrating at frequencies greater than 20,000 cycles per second, i.e., beyond the range of human hearing. The application of sound energy...

life support system

(Encyclopedia)life support system: see artificial life support; Life Support for Human Spaceflight under space science. ...