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IEVref: | 112-01-08 | ID: | |

Language: | en | Status: Standard | |

Term: | base quantity | ||

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Definition: | quantity in a conventionally chosen subset of a given system of quantities, where no quantity within the subset can be expressed in terms of the others
NOTE 1 – The subset mentioned in the definition is termed the set of base quantities. The International System of Quantities (ISQ) is defined by a set of seven base quantities. NOTE 2 – Base quantities are referred to as being mutually independent since a base quantity cannot be expressed as a product of powers of the other base quantities. NOTE 3 – The quantity “number of entities” can be regarded as a base quantity in any system of quantities. | ||

Publication date: | 2010-01 | ||

Source: | ISO/IEC GUIDE 99:2007 1.4 | ||

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