mass metrology
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Metrology — This article is about the science of measurement. For the study of weather see Meteorology. A scientist stands in front of a microarcsecond (1 millionth of 1 arcsecond or 1 millionth of 1/3600 degree) testbed. Metrology is the science of… … 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-to-charge ratio — Charge to Mass ratio SI quantity dimension: M/(I⋅T) SI unit: kg/C other units: Th The mass to charge ratio ratio (m/Q) is a physical quantity that is widely used in the electrodynamics of c … Wikipedia
metrology — metrological /me treuh loj i keuhl/, adj. metrologically, adv. metrologist, n. /mi trol euh jee/, n., pl. metrologies. the science of weights and measures. [1810 20; METRO 1 + LOGY] * * * Science of measurement. Measuring a quantity means… … Universalium
Atomic mass unit — unified atomic mass unit Unit system: SI recognized unit Unit of... mass Symbol: u Unit conversions 1 u in... is equal to... dalton … Wikipedia
Pseudoscientific metrology — Some approaches in the branch of historic metrology are highly speculative and can be qualified as pseudoscience. Interest in ancient metrology was triggered by research into the various Megalith building cultures and the Great Pyramid of… … Wikipedia
Kilogram — Kg redirects here. For other uses, see Kg (disambiguation). Kilogram A computer generated image of the international prototype kilogram (IPK). The IPK is the kilogram. The IPK, which is roughly the size of a golf ball, sits here alongside a ruler … Wikipedia
Measurement uncertainty — In metrology, measurement uncertainty is a non negative parameter characterizing the dispersion of the values attributed to a measured quantity. The uncertainty has a probabilistic basis and reflects incomplete knowledge of the quantity. All… … Wikipedia
Measurement — For bust/waist/hip measurement, see BWH. A typical tape measure with both metric and US units and two US pennies for comparison Measurement is the process or the result of determining the ratio of a physical quantity, such as a length, time,… … Wikipedia
International System of Units — SI redirects here. For other uses, see Si (disambiguation). Cover of brochure The International System of Units The International System of Units[1] (abbreviated SI from French: Système international d unités[2]) is the modern … Wikipedia
measurement system — Introduction any of the systems used in the process of associating numbers with physical quantities and phenomena (metrology). Although the concept of weights and measures (measurement) today includes such factors as temperature, luminosity … Universalium
