| Definition: | scalar, vector or tensor quantity, existing at each point of a defined space region and depending on the position of the point Note 1 to entry: A field quantity may be a function of time or any other parameter.
Note 2 to entry: In English the term "field quantity", in French "grandeur de champ", is also used to denote a quantity, the square of which is proportional to power, whereas quantities proportional to power are called "power quantities", whether or not the quantities depend on the position of a point (see IEV 702-02-08). According to ISO 80000-1:2009, Annex C, the preferred term is then “root-power quantity”.
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