(Encyclopedia) fluoroscopefluoroscopefl&oobreve;rˈəskōp [key], instrument consisting of an X-ray machine (see X ray) and a fluorescent screen that may be used by physicians to view the internal…
(Sean “Diddy” Combs) producer, musicianBorn: 11/4/1969Birthplace: New York City Influential music producer who, at a very young age, launched the careers of such rap artists as Notorious B.I.G. and…
(Encyclopedia) refraction, in physics, deflection of a wave on passing obliquely from one transparent medium into a second medium in which its speed is different, as the passage of a light ray from…
hip-hop singerBorn: 1971Birthplace: Bronx, New York Raised in New York's housing projects, her singing talent fueled her interest in music, and she began to do solo performances at her church choir…
(Encyclopedia) Willughby, FrancisWillughby, Franciswĭlˈəbē [key], 1635–72, English naturalist. He is known especially for his early systematic work on birds and fishes, in which he made some of the…
People and animals have worked together for thousands of years. Some dogs guard against enemies, while others herd cattle. Cats hunt mice and other rodents, preventing them from stealing food and…
(Encyclopedia) Roentgen or Röntgen, Wilhelm ConradRoentgen or Röntgen, Wilhelm Conradboth: rĕntˈgĭn, rŭntˈ–, Ger. vĭlˈhĕlm kônˈrät röntˈgən [key], 1845–1923, German physicist. His notable research in…
(Encyclopedia) CAT scanCAT scankăt [key] [computerized axial tomography], X-ray technique that allows relatively safe, painless, and rapid diagnosis in previously inaccessible areas of the body; also…
