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71Geography of Ethiopia — Map of Ethiopia. Satellite image of Ethiopi …
72Casein — For information about casein usage in artistic painting, see Casein paint. Casein (pronunciation: /ˈkeɪsi …
73Zeolite — Zeolites (Greek, zein , to boil ; lithos , a stone ) are hydrated aluminosilicate minerals and have a micro porous structure. The term was originally coined in the 18th century by a Swedish mineralogist named Axel Fredrik Cronstedt who observed,… …
74Gold chalcogenides — are compounds formed between gold and one of the chalcogens, elements from group 16 of the periodic table: oxygen, sulfur, selenium or tellurium.*Gold(III) oxide, Au2O3. decomposes into gold and oxygen above 160 °C. dissolves in concentrated… …
75Polyethylene glycol — IUPAC name poly(oxyethylene) {structure based}, poly(ethylene oxide) {source based} …
76Elgin Marbles — The Elgin Marbles, also known as the Parthenon Marbles, are a collection of classical Greek marble sculptures, inscriptions and architectural members that originally belonged to the Parthenon and other buildings on the Acropolis of Athens. [… …
77Mars Pathfinder — Pathfinder and Sojourner at JPL in October 1996 Operator NASA – JPL Mission type Lander, rover …
78Acrylonitrile butadiene styrene — Acrylonitrile butadiene styrene, or ABS, (chemical formula (C8H8· C4H6·C3H3N)n) is a common thermoplastic used to make light, rigid, molded products such as piping, musical instruments (most notably recorders and plastic clarinets), golf club… …
79Tektite — Tektites (from Greek tektos , molten) are natural glass objects up to a few centimeters in size, which most scientists argue were formed by the impact of large meteorites on Earth s surface. Tektites are typically black or olive green, and their… …
80James Keir — FRS (20 September 1735 ndash; 11 October 1820), chemist, geologist, industrialist and inventor, was born in Stirlingshire, Scotland. Keir was an important member of the Lunar Society. Life and work Keir attended the Royal High School, Edinburgh,… …
