Processing math: 100%



IEVref:102-03-22ID:
Language:enStatus: Standard
Term: component, <of a vector quantity>
Synonym1: coordinate, <of a vector quantity>
[Preferred]
Synonym2:
Synonym3:
Symbol:
Definition: any of the n scalar quantities Q1,Q2,,Qn in the representation of a vector quantity Q as the linear combination Q1a1+Q2a2++Qnan of the base vectors a1,a2,,an

Note 1 to entry: Instead of treating each component of a vector quantity as a quantity (i.e. the product of a numerical value and a unit of measurement), the vector quantity Q may be represented as a vector of numerical values multiplied by the unit:
Q={Q1}[Q]e1+{Q2}[Q]e2+{Q3}[Q]e3=({Q1}e1+{Q2}e2+{Q3}e3)[Q]
where {Q1},{Q2},{Q3} are numerical values, [Q] is the unit, and e1,e2,e3 are the unit vectors. Similar considerations apply to tensor quantities.

Note 2 to entry: The components of a vector quantity are transformed by a coordinate transformation like the coordinates of a position vector.

Note 3 to entry: The term "coordinate" is generally used when the vector quantity is a position vector. This usage is consistent with the definition of the coordinates of a vector in mathematics (IEV 102-03-09).


Publication date:2008-08
Source
Replaces:
Internal notes:2017-02-20: Editorial revisions in accordance with the information provided in C00019 (IEV 102) - evaluation. JGO
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5: