firmly+held+together
81Korean Air Lines Flight 007 — Flight 007 redirects here. For other uses, see Flight 7 (disambiguation). Korean Air Lines Flight 007 Artist s rendition of HL7442, the KAL 747 lost during Flight 007 Occurrence summary …
82Herbert Spencer — Infobox Philosopher region = Western Philosophy era = 19th century philosophy color = #B0C4DE image caption =Herbert Spencer name =Herbert Spencer birth =27 April, 1820 death =8 December, 1903 school tradition = Evolutionism,… …
83Buenos Aires — /bway neuhs uyeur iz, boh neuhs/; Sp. /bwe naws uy rddes/ a seaport in and the capital of Argentina, in the E part, on the Río de la Plata. 9,927,404. * * * City (pop., 1999 est.: city, 2,904,192; metro area, 12,423,000), capital of Argentina.… …
84Battle of the Bulge — For other uses, see Battle of the Bulge (disambiguation). Battle of the Bulge Part of World War II …
85Internal ballistics — Internal ballistics, a subfield of ballistics, is the study of a projectile s behavior from the time its propellant s igniter is initiated until it exits the gun barrel. The study of internal ballistics is important to designers and users of… …
86sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
87Doubt — • A state in which the mind is suspended between two contradictory propositions and unable to assent to either of them Catholic Encyclopedia. Kevin Knight. 2006. Doubt Doubt …
88The Byzantine Empire — The Byzantine Empire † Catholic Encyclopedia ► The Byzantine Empire The ancient Roman Empire having been divided into two parts, an Eastern and a Western, the Eastern remained subject to successors of Constantine, whose capital was at …
89Umar — For other uses, see Omar (disambiguation). Umar ibn al Khattab Caliph Umar s empire at its peak, 644 Al Farooq Reign …
90Magdeburg hemispheres — Gaspar Schott s sketch of Otto von Guericke s Magdeburg hemispheres experiment. The Magdeburg hemispheres are a pair of large copper hemispheres with mating rims. When the rims were sealed with grease and the air was pumped out, the sphere… …
