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IEVref: | 102-03-21 | ID: | |

Language: | en | Status: Standard | |

Term: | vector quantity | ||

Synonym1: | vector, <quantity> [Preferred] | ||

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Definition: | quantity which can be represented by a vector multiplied by a scalar quantity Note 1 to entry: The vector defining a vector quantity is generally a unit vector in the usual two- or three-dimensional geometrical space. A vector quantity can then be represented as an oriented line segment characterized by its point of acting, its direction and its magnitude, where the magnitude is a non-negative number multiplied by a unit of measurement. The components are also the product of a numerical value and the unit. Examples of vector quantities are: velocity, force, electric field strength. Note 2 to entry: A vector quantity may be considered either as attached to a point of acting (localized or bound vector), or as having any point of acting on a straight line parallel to it (sliding vector), or as having any point of acting in the space (free vector). Note 3 to entry: Operations defined for vectors apply to vector quantities. For example, the product of a scalar quantity | ||

Publication date: | 2017-07 | ||

Source: | |||

Replaces: | 102-03-21:2007-08 | ||

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Note 1 to entry: The vector defining a vector quantity is generally a unit vector in the usual two- or three-dimensional geometrical space. A vector quantity can then be represented as an oriented line segment characterized by its point of acting, its direction and its magnitude, where the magnitude is a non-negative number multiplied by a unit of measurement. The components are also the product of a numerical value and the unit. Examples of vector quantities are: velocity, force, electric field strength.

Note 2 to entry: A vector quantity may be considered either as attached to a point of acting (localized or bound vector), or as having any point of acting on a straight line parallel to it (sliding vector), or as having any point of acting in the space (free vector).

Note 3 to entry: Operations defined for vectors apply to vector quantities. For example, the product of a scalar quantity *p* and the vector quantity $Q=qe$ is the vector quantity $pQ=pqe$, where ** e** is a unit vector.