natural metric
51Systems of measurement — A system of measurement is a set of units which can be used to specify anything which can be measured and were historically important, regulated and defined because of trade and internal commerce. Scientifically, when later analyzed, some… …
52soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… …
53Miles per gallon gasoline equivalent — Monroney label showing the EPA s fuel economy equivalent ratings for the 2011 Chevrolet Volt. The rating for all electric mode (left) is expressed in miles per gallon gasoline equivalent. Miles per gallon gasoline equivalent (MPGe or MPGge) is a… …
54Antarctica — /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:… …
55Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …
56Orbifold — This terminology should not be blamed on me. It was obtained by a democratic process in my course of 1976 77. An orbifold is something with many folds; unfortunately, the word “manifold” already has a different definition. I tried “foldamani”,… …
57Screw — 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… …
58Units of measurement — Weights and measures redirects here. For other uses, see Weights and measures (disambiguation). The former Weights and Measures office in Seven Sisters, London A unit of measurement is a definite magnitude of a physical quantity, defined and… …
59Tyrannosaurus — T. rex redirects here. For other uses, see T. rex (disambiguation). Bilateria Tyrannosaurus rex Temporal range: Late Cretaceous, 67–65.5 Ma …
60Glossary of topology — This is a glossary of some terms used in the branch of mathematics known as topology. Although there is no absolute distinction between different areas of topology, the focus here is on general topology. The following definitions are also… …
