Born: 1906Birthplace: Boston, Mass. Synthesis of riboflavin and sulfaquinoxaline—Tishler found a new process for the economical and large-scale synthesis of riboflavin (vitamin B2). He also…
(Encyclopedia) hardening, in metallurgy, treatment of metals to increase their resistance to penetration. A metal is harder when it has small grains, which result when the metal is cooled rapidly.…
(Encyclopedia) inclosure or enclosure, in British history, the process of inclosing (with fences, ditches, hedges, or other barriers) land formerly subject to common rights. Such land included fields…
Paleontologists now have evidence that dinosaurs lived on all of the continents. At the beginning of the age of dinosaurs (during the Triassic Period, about 230 million years ago) the continents…
(Encyclopedia) Lincoln, Benjamin, 1733–1810, American Revolutionary soldier, b. Hingham, Mass. He served under Horatio Gates in the Saratoga campaign before becoming (1778) commander in the South. In…
(Encyclopedia) Arana Osorio, CarlosArana Osorio, Carloskärˈlōs äräˈnä ōsōˈryō [key], 1918–2003, president of Guatemala (1970–74). A conservative army colonel noted for his successes during an…
(Encyclopedia) Rehnskiöld, Karl GustafRehnskiöld, Karl Gustafkärl gŭsˈtäv rānˈshöld [key], 1651–1722, Swedish field marshal. One of the ablest lieutenants of Charles XII in the Northern War, he…
Just who can run for president? 2016 Presidential Candidate Ted Cruz Photo Credit: Gage Skidmore Related Links U.S. Elections How a President Is Nominated…
inventorBorn: 28 November 1928Best Known as: inventor of the computerized telephone switching Erna Hoover invented the first computerized telephone switching system…
