german technical and scientific association for gas and water

  • 81Dates of 2007 — ▪ 2008 January Ladies and gentlemen: on this day, at this hour, it is still within our power to shape the outcome of this battle. Let us find our resolve, and turn events toward victory. U.S. Pres. George W. Bush, asking for support for his… …

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  • 82medicine, 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… …

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  • 83Poland — Polska redirects here. For other uses, see Polska (disambiguation). This article is about the country. For other uses, see Poland (disambiguation). Republic of Poland Rzeczpospolita Polska …

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  • 84West Virginia — This article is about the U.S. state of West Virginia. For other uses, see West Virginia (disambiguation). State of West Virginia …

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  • 85performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …

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  • 86radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …

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  • 87Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …

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  • 88Abdul Qadeer Khan — HI, NI (twice) Abdul Qadeer Khan, 1999. Born 1 April …

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  • 89Intermittent energy source — An intermittent energy source is any source of energy that is not continuously available due to some factor outside direct control. The intermittent source may be quite predictable, for example, tidal power, but cannot be dispatched to meet the… …

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  • 90Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …

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