is: a scalar field or a vector field that has the same value at every point. In the case of a vector field both the magnitude and the direction of the field must be the same everywhere. Such fields may be represented by the same vector at every point. [M2.6, P3.3]
therefore is: a field in which the field lines are everywhere parallel. [P3.1]
is not necessarily: a constant field, which is (strictly) a field that does not change with time. [P3.3]
Copyright 1997, The Open University