describes: the phase relationship between two specified oscillations that are not in phase. [P5.1, P5.6, P6.1]
is sometimes used: in the phrase 'exactly out of phase' to mean 'in anti-phase.' [P5.1, P5.6, P6.1]
may be applied: to waves at a common point (or possibly at separate points) by comparing the oscillations caused by the waves at the relevant point(s). [P5.6, P6.1]
Contrast with in phase.
Copyright 1997, The Open University