(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…
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…
FILTER FEEDERAFRICAN LUNGFISHJAWLESS LAMPREYFISHFIND OUT MOREFish are water animals that evolved about 500 million years ago. They were the first animals to have an internal skeleton. Most fish…
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…
(Encyclopedia) Hounsfield, Sir Godfrey Newbold, 1919–2004, British electrical engineer. A radar expert for the Royal Air Force during World War II, in the 1950s Hounsfield began developing computer…
(Encyclopedia) Hess, Victor Francis, 1883–1964, American physicist, b. Austria, Ph.D. Univ. of Graz, 1906. After teaching at the universities of Graz and Innsbruck, he came to the United States in…
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…
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…
(Bryan Ray Ulrich)actorBorn: 1/20/1970Birthplace: North Carolina Ulrich left North Carolina for New York City and an acting career, getting off to a fine start when he was invited to join David…
