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Peter Simon Pallas
Peter Simon Pallas , 1741–1811, German naturalist and explorer. He became (1768) professor at the Academy of Sciences, St. Petersburg. In 1769, Pallas was a member of an expedition to observe the transit of Venus, and until 1774 he explored the upper Amur, the Caspian Sea, and the Ural and Altai mts., collecting valuable specimens in natural history. Pallas published (1771–76) an account of the journey and also wrote on natural history and on Bering's discoveries. |
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"Peter Simon Pallas." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "Peter Simon Pallas." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1E1-Pallas-P.html "Peter Simon Pallas." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Pallas-P.html |
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pallasite
pallasite A class of stony-iron meteorite named after the German naturalist Peter Simon Pallas (1741–1811), who found a 680-kg specimen near Krasnojarsk, Russia, in 1772. In pallasites, cavities in the nickel–iron metal are filled with crystals of the hard, glassy silicate mineral olivine; the proportions of metal and silicate are about the same.
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"pallasite." A Dictionary of Astronomy. 1997. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "pallasite." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O80-pallasite.html "pallasite." A Dictionary of Astronomy. 1997. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-pallasite.html |
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pallasite
pallasite A striking and unusual kind of meteorite in which olivine and iron are intergrown in roughly equal proportions; these meteorites are thus intermediate between stony and iron meteorites. Only 35 examples are known.
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AILSA ALLABY and MICHAEL ALLABY. "pallasite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "pallasite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-pallasite.html AILSA ALLABY and MICHAEL ALLABY. "pallasite." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-pallasite.html |
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Simon Peter, St
Simon Peter, St. An alternative designation for St Peter, who was originally called Simon.
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E. A. LIVINGSTONE. "Simon Peter, St." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. E. A. LIVINGSTONE. "Simon Peter, St." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O95-SimonPeterSt.html E. A. LIVINGSTONE. "Simon Peter, St." The Concise Oxford Dictionary of the Christian Church. 2000. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O95-SimonPeterSt.html |
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