unit of mass

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• Mass in special relativity — incorporates the general understandings from the concept of mass energy equivalence. Added to this concept is an additional complication resulting from the fact that mass is defined in two different ways in special relativity: one way defines… …   Wikipedia

• Mass flow rate — is the mass of substance which passes through a given surface per unit time. Its unit is mass divided by time, so kilogram per second in SI units, and slug per second or pound per second in US customary units. It is usually represented by the… …   Wikipedia

• mass number — n. Physics Chem. the number of neutrons and protons in the nucleus of an atom: the approximate mass of a given nucleus is obtained by multiplying the mass number by the fundamental unit of mass, 1.6605 × 10 24 grams (1/ 12 the mass of C12 atom) …   English World dictionary

• Mass — This article is about the scientific concept. For the substance of which all physical objects consist, see Matter. For other uses, see Mass (disambiguation). Classical mechanics …   Wikipedia

• Mass versus weight — The chains on the swing hold all the child’s weight. If one were to stand behind her at the bottom of the arc and try to stop her, one would be acting against her inertia, which arises purely from mass, not weight. In everyday usage, the mass of… …   Wikipedia

• Mass spectrum — Electron ionization mass spectrum of toluene [4]. Note parent peak corresponding to molecular mass M = 92 (C7H8+) and highest peak at M 1 = 91 (C7H7+, quasi stable tropylium cation). A mass spectrum is an inten …   Wikipedia

• Mass concentration (chemistry) — In chemistry, the mass concentration ρi (or γi) is defined as the mass of a constituent mi divided by the volume of the mixture V:[1] Contents …   Wikipedia

• mass — massedly /mas id lee, mast lee/, adv. /mas/, n. 1. a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough. 2. a collection of incoherent particles, parts, or objects regarded as forming one body: a… …   Universalium

• Mass — /mas/, n. 1. the celebration of the Eucharist. Cf. High Mass, Low Mass. 2. (sometimes l.c.) a musical setting of certain parts of this service, as the Kyrie eleison, Gloria, Credo, Sanctus, Benedictus, and Agnus Dei. [bef. 900; ME masse, OE… …   Universalium

• unit —    1. when counting, the word unit means one. For example, if a car dealer expects a shipment of 20 units, that means 20 cars.    2. a shorthand word for a variety of named units, particularly the international unit in pharmacology.    3. (of… …   Dictionary of units of measurement

• unit of measurement — noun any division of quantity accepted as a standard of measurement or exchange the dollar is the United States unit of currency a unit of wheat is a bushel change per unit volume • Syn: ↑unit • Derivationally related forms: ↑unitize ( …   Useful english dictionary