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IEVref: | 112-01-31 | ID: | |

Language: | en | Status: Standard | |

Term: | quantity equation | ||

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Definition: | mathematical relation between quantities in a given system of quantities, independent of units of measurement
NOTE The general form of a quantity equation is Q_{1}, Q_{2}, ... Q denote different quantities. A simple form of a quantity equation is _{n}Q_{1} = ζ Q_{2} Q_{3}, where ζ is a numerical factor. Examples:
*T*= (1/2)*m**v*^{2}, where*T*is the kinetic energy and*v*the speed of a specified particle of mass*m*;*n*=*I*·*t*/*F*, where*n*is the amount of substance of a univalent component,*I*is the electric current and*t*the duration of the electrolysis, and where*F*is the Faraday constant.
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Publication date: | 2010-01 | ||

Source: | ISO/IEC GUIDE 99:2007 1.22 MOD | ||

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Internal notes: | 2015-05-07: Image-based entry replaced by character-based entry. JGO | ||

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NOTE The general form of a quantity equation is *f*(*Q*_{1}, *Q*_{2}, ... *Q _{n}*) = 0, where

Examples:

*T*= (1/2)*m**v*^{2}, where*T*is the kinetic energy and*v*the speed of a specified particle of mass*m*;*n*=*I*·*t*/*F*, where*n*is the amount of substance of a univalent component,*I*is the electric current and*t*the duration of the electrolysis, and where*F*is the Faraday constant.