the heart of the telescope is
81Limiting magnitude — is an astronomical term which describes the faintest apparent magnitude detectable or detected by a given instrument.In some cases, limiting magnitude refers to the utter threshold of detection. In more formal uses, limiting magnitude is… …
82Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
83Pretty Cure (2004 TV series) — Pretty Cure Cure Black/Nagisa (left) and Cure White/Honoka (right) ふたりはプリキュア (Futari wa Purikyua) Genre Magical girl, Action, comed …
84Maya civilization — This article is about the pre Columbian Maya civilization. For a discussion of the modern Maya, see Maya peoples. For other meanings of the word Maya, see Maya …
85evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …
86Calendar of 2000 — ▪ 2001 January We are fortunate to be alive at this moment in history. Never before has our nation enjoyed, at once, so much prosperity and social progress with so little internal crisis and so few external threats. Never before have we had such… …
87medicine, history of — Introduction the development of the prevention and treatment of disease from prehistoric and ancient times to the 20th century. Medicine and surgery before 1800 Primitive (primitive culture) medicine and folklore Unwritten history is not… …
88History of film — This article is about the history of cinema. For other uses, see History of photography. Years in film 1870s 1880s 1890s …
89eclipse — eclipser, n. /i klips /, n., v., eclipsed, eclipsing. n. 1. Astron. a. the obscuration of the light of the moon by the intervention of the earth between it and the sun (lunar eclipse) or the obscuration of the light of the sun by the intervention …
90Calendar of 2003 — ▪ 2004 January So long as there is a single Brazilian brother or sister going hungry, we have ample reason to be ashamed of ourselves. Lula, in his inaugural address as president of Brazil, January 1 January 1 The Socialist Lula (Luiz… …
