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Marvin, Charles Frederick

(Encyclopedia) Marvin, Charles Frederick, 1858–1943, American meteorologist, b. Putnam (now part of Zanesville), Ohio, grad. Ohio State Univ., 1883. He entered (1884) the U.S. Signal Service,…

Castaldi, Pamfilo

(Encyclopedia) Castaldi, PamfiloCastaldi, Pamfilopämˈfēlō kästälˈdē [key], c.1398–c.1490, Italian humanist and printer. He was the first printer of the city of Milan. Some credit him with the…

Baird, John Logie

(Encyclopedia) Baird, John Logie, 1888–1946, Scottish inventor. In 1926 he gave the first demonstration of true television with a televisor of his own invention that differed from later instruments…

Graham, George

(Encyclopedia) Graham, George, 1674?–1751, English instrument maker. A clockmaker by trade, Graham designed clocks and watches that earned him membership in the Royal Society and were still…

Koster, Laurens Janszoon

(Encyclopedia) Koster or Coster, Laurens JanszoonKoster or Coster, Laurens Janszoonlouˈrəns yänˈsōn kôsˈtər [key], c.1370–c.1440, Dutch sexton of a church in Haarlem, one of the men to whom has been…

Wilson, Charles Thomson Rees

(Encyclopedia) Wilson, Charles Thomson Rees, 1869–1959, Scottish physicist, educated at Manchester and Cambridge universities. He was Jacksonian professor of natural philosophy at Cambridge from 1925…

Akasaki, Isamu

(Encyclopedia) Akasaki, Isamu, 1929–2021, Japanese physicist, b. Chiran, Japan, Kyoto Univ. (BA, 1942), Nagoya Univ. (Ph.D., 1964). Aftger graduating from college, Akasaki worked as an…

Daguerre, Louis Jacques Mandé

(Encyclopedia) Daguerre, Louis Jacques MandéDaguerre, Louis Jacques Mandélwē zhäk mäNdāˈ dägârˈ [key], 1789–1851, French scene painter and physicist, inventor of the daguerreotype, a photograph…

Leuna

(Encyclopedia) LeunaLeunaloiˈnä [key], city (1994 pop. 8,130), Saxony-Anhalt, S central Germany. There, in 1916, the first synthetic nitrogen plant began to operate after the invention of the Haber…

Welsbach, Carl Auer, Baron von

(Encyclopedia) Welsbach, Carl Auer, Baron vonWelsbach, Carl Auer, Baron vonkärl ouˈər bärōnˈ fən vĕlsˈbäkh [key], 1858–1929, Austrian chemist. He discovered the rare earth elements neodymium and…