Physical quantity
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A physical quantity is a property of a phenomenon, body, or substance, where the property has a magnitude that can be expressed as a number and a "reference". The "reference" will often be a measurement unit, but not always (as in the cases of ordinal quantities and quantities of dimension one).[1] Examples of physical quantities include length, energy and electronegativity.
References
- ↑ International vocabulary of metrology — Basic and general concepts and associated terms (VIM), 3rd ed.; International Bureau of Weights and Measures: Sèvres, France, 2008; pp 2–3, <http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf>.
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