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• Mass–energy equivalence — E=MC2 redirects here. For other uses, see E=MC2 (disambiguation). 4 meter tall sculpture of Einstein s 1905 E = mc2 formula at the 2006 Walk of Ideas, Berlin, Germany In physics, mass–energy equivalence is the concept that the …   Wikipedia

• gram — gram1 /gram/, n. a metric unit of mass or weight equal to 15.432 grains; one thousandth of a kilogram. Abbr.: g Also, esp. Brit., gramme. [1790 1800; < F gramme < LL gramma a small weight < Gk grámma something drawn, a small weight] gram2 …   Universalium

• Gram — /grahm/, n. (in the Volsunga Saga) the sword of Sigmund, broken by Odin, repaired by Regin, and used again by Sigurd in killing Fafnir. Cf. Balmung. [ < ON Gramr lit., angry, evil] * * * Unit of mass or weight used especially in the centimetre… …   Universalium

• gram equivalent — (gEq)    , gram equivalent mass (GEM), gram equivalent weight (GEW)    various names for the mass in grams of a substance that would react with or replace one gram of hydrogen. See equivalent, the shorter name now used in many contexts for this… …   Dictionary of units of measurement

• Gram (disambiguation) — Gram is a unit of measurement of mass. Otherwise, gram may refer to: gram, the Greek based suffix meaning drawing or representation. Contents 1 Places 2 People …   Wikipedia

• gram — gram1 [gram] n. [Fr gramme < LL gramma, weight of two oboli < Gr, small weight, lit., what is written < graphein, to write: see GRAPHIC] the basic unit of mass in the metric system, equal to 0.03527 ounce (0.0022046 pound or 15.4321… …   English World dictionary

• gram-atomicmass — gram a·tom·ic mass (grămʹə tŏmʹĭk) n. The mass of one mole of atoms of an element. Also called gram atomic weight. * * * …   Universalium

• gram-atom — gram atˈom or gram atomic weight, gram molˈecule or gram molecular weight noun The quantity of an element, or a compound, whose mass in grams is equal to its atomic weight and molecular weight respectively (a now discarded concept; see ↑mole4) •… …   Useful english dictionary

• gram-molecule — gram atˈom or gram atomic weight, gram molˈecule or gram molecular weight noun The quantity of an element, or a compound, whose mass in grams is equal to its atomic weight and molecular weight respectively (a now discarded concept; see ↑mole4) •… …   Useful english dictionary

• gram-equivalent — gram equivˈalent or gram equivalent weight noun The quantity of a substance whose mass in grams is equal to its equivalent weight • • • Main Entry: ↑gram …   Useful english dictionary

• gram-equivalent weight — gram equivˈalent or gram equivalent weight noun The quantity of a substance whose mass in grams is equal to its equivalent weight • • • Main Entry: ↑gram …   Useful english dictionary