GIANT TELESCOPESBIOGRAPHY: GALILEO Italian, 1564-1642FIND OUT MOREThe scientific study of the stars and other objects in space is called astronomy. Astronomers observe the Universe using…
Born: 1915Birthplace: Ontario, Canada Electron lens correction device—Hillier is noted for his contributions to the development of the electron microscope. The electron lens is used to focus a beam…
Born: 1873Birthplace: Hudson, Mass. Vacuum tube—Coolidge invented ductile tungsten, the filament material still used in incandescent lamps. He also invented the “Coolidge tube”, the model upon…
(Encyclopedia) ShimadaShimadashĭmäˈdä [key], city (1990 pop. 73,810), Shizuoka prefecture, E central Honshu, Japan, on the Oi River. It is a distribution point for timber and rice and a center for…
(Encyclopedia) SagamiharaSagamiharasägämēˈhärä [key], city (1990 pop. 531,542), Kanagawa prefecture, central Honshu, Japan. It is a suburb of Tokyo with metallurgical, food processing, and electrical…
(Encyclopedia) PanihatiPanihatipänēhäˈtē [key], city (1991 pop. 275,359), West Bengal state, NE India, on the Hugli River. It is a suburb of Kolkata (Calcutta) and a rice-trading center. Manufactures…
(Encyclopedia) mammography, diagnostic procedure that uses low-dose X rays to detect abnormalities in the breasts. Tomosynthesis, also known as 3D mammography, is form of mammography that combines X-…
(Encyclopedia) Tompkins, Daniel D., 1774–1825, American political figure, Vice President of the United States (1817–25), b. Scarsdale, N.Y. A leader of the Jeffersonian group in New York state, he…
(Encyclopedia) radiology, branch of medicine specializing in the use of X rays, gamma rays, radioactive isotopes, and other forms of radiation in the diagnosis and treatment of disease. X ray…
