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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...

Huxley, Thomas Henry

(Encyclopedia)Huxley, Thomas Henry, 1825–95, English biologist and educator, grad. Charing Cross Hospital, 1845. Huxley gave up his own biological research to become an influential scientific publicist and was th...

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...

race

(Encyclopedia)race, one of the group of populations regarded as constituting humanity. The differences that have historically determined the classification into races are predominantly physical aspects of appearanc...

life support system

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

lyre

(Encyclopedia)lyre, generic term for stringed musical instruments having a sound box from which project curved arms joined by a crossbar. The strings are stretched between the crossbar and the sound box and are plu...

Ma, Yo-Yo

(Encyclopedia)Ma, Yo-Yo mä [key], 1955–, American cellist, b. Paris. The son of musicologist Hiao-Tsun Ma, who left China in the 1930s, he was a musical prodigy, giving a public recital in Paris at the age of si...

Mulholland, William

(Encyclopedia)Mulholland, William, 1855–1935, American engineer, b. Belfast, Ireland. He arrived in Los Angeles in 1877, becoming a laborer for the local water company. Despite his lack of formal training, he eve...

Rickover, Hyman George

(Encyclopedia)Rickover, Hyman George, 1900–1986, American admiral, b. Russia. In World War II he served as head of the electrical section of the navy's Bureau of Ships. After the war he was assigned (1946) to the...

Viñoly, Rafael

(Encyclopedia)Viñoly, Rafael, 1944–, Uruguayan-American architect, b. Montevideo. Even before receiving his architectural degrees (1968, 1969) from the Univ. of Buenos Aires, he and six associates founded Argent...