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71Columbus Fountain — Artist Lorado Taft Year 1912 (1912) Type Marble …
72Nevada National Security Site — Nevada Test Site November 1951 nuclear test at Nevada Test Site. Test is shot Dog from Operation Buster, with a yield of 21 kilotonnes of TNT (88 TJ). It was the f …
73Roughness — is a measure of the texture of a surface. It is quantified by the vertical deviations of a real surface from its ideal form. If these deviations are large, the surface is rough; if they are small the surface is smooth. Roughness is typically… …
74Cupar — Coordinates: 56°19′10″N 3°00′42″W / 56.31940°N 3.01155°W / 56.31940; 3.01155 …
75Drexel University — seal Motto Scientiae, Industria, Arte Motto in English Science, Industry, Art Established 1891 Type …
76Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
77Floyd Collins — Infobox Person name = Floyd Collins image size = caption = Floyd Collins. His lapel ribbon reads GREAT CRYSTAL CAVE. birth date = birth date|1887|7|20 birth place = death date = c. death date|1925|2|13 death place = other names = known for =… …
78Hip — For other uses of the term, see hip (disambiguation). Hip (anatomy) Bones of the hip Latin coxa Gray s …
79Donald Neilson — mugshot Background information Birth name Donald Nappey Also known as …
80Paper plane — This article is about toy aircraft fashioned from paper. For other uses, see Paper plane (disambiguation). Instructions for a traditional paper plane. A paper plane, paper aeroplane (UK), paper airplane (US), paper glider, paper dart or dart is a …
