TURBINESFIND OUT MOREMany modern machines, from motorbikes to jet aircraft, are powered by engines. An engine is a machine that turns fuel into movement. The fuel is burned to generate heat…
Wrestling with Radicals
Algebra
Wrestling with Radicals Introducing the Radical Sign Simplifying Radical Expressions Unleashing Radical Powers Radical Operations Solving Radical Equations…
(Amendments I to X inclusive, popularly known as the Bill of Rights, were proposed and sent to the states by the first session of the First Congress. They were ratified Dec. 15, 1791.)Amendment I[…
Selected records. Source: National Aeronautic AssociationGreat Circle Distance Without LandingInternational: 2,213.04 mi; 3,561.55 km.Robert G. Ferry (U.S.) in Hughes YOH-6A helicopter powered by…
Energy is the power that we use for transportation, for heat and light in our homes and other places, and for the manufacture of all kinds of products. It has many other uses, too. The development…
Born: 1919Birthplace: New Haven, Conn. High-voltage, high-power semiconductor pin rectifier—Hall's invention boosted efficiency and reduced wasted power and destructive heat build-up in large-scale…
(Encyclopedia) Alarcón, Pedro Antonio deAlarcón, Pedro Antonio depāᵺˈrō äntōˈnyō [key]Alarcón, Pedro Antonio de dā älärkōnˈ [key], 1833–91, Spanish writer, politician, and diplomat. He wrote several…
(Encyclopedia) Far East, in the most restricted sense, region comprising the countries of E Asia, namely China, Japan, North Korea, South Korea, Mongolia, and Taiwan, and the easternmost portion of…
(Encyclopedia) Farrar, Edgar HowardFarrar, Edgar Howardfărˈər [key], 1849–1922, American lawyer, b. Concordia, La. He made his home in New Orleans, where he had a large corporation practice. He was…
(Encyclopedia) Hilary of Arles, SaintHilary of Arles, Sainthĭlˈərē, ärl [key], d. 449, Gallo-Roman churchman. Forsaking riches, he entered the monastery at Lérins. He was made archbishop of Arles (c.…
