(Encyclopedia) dumadumad&oomacr;ˈmä [key], Russian name for a representative body, particularly applied to the Imperial Duma established as a result of the Russian Revolution of 1905. The…
(Encyclopedia) oarfish, large, elongated fish, genus Regalecus, found in the oceans worldwide except for the polar regions. Oarfish species are solitary and rarely seen by humans. The giant oarfish,…
(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…
(Encyclopedia) Braun, Karl FerdinandBraun, Karl Ferdinandfĕrˈdēnäntˌ [key]Braun, Karl Ferdinand broun [key], 1850–1918, German physicist. Braun taught at the Univ. of Marburg, Strasbourg Univ.,…
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…
Born: June 16, 1951Panamanian boxer one of only 4 fighters to hold 4 different world titles— lightweight (1972-79), welterweight (1980), junior middleweight (1983) and middleweight (1989-90); lost…
DOES THE ATMOSPHERE REMAIN THE SAME FROM EARTH TO SPACE? WHAT IS ATMOSPHERIC PRESSURE? FIVE ATMOSPHERE LAYERSOZONE LAYERFIND OUT MOREMost life on Earth depends on the atmosphere, a bubble of gases…
Born: 1906Birthplace: Beaver, Utah Television system—At the age of 20 Farnsworth produced the first all-electronic television image. In addition to his television system he invented the first cold…
