wave normal

wave normal

[′wāv ′nȯr·məl]
(physics)
A unit vector which is perpendicular to an equiphase surface of a wave, and has its positive direction on the same side of the surface as the direction of propagation.
One of a family of curves which are everywhere perpendicular to the equiphase surfaces of a wave.
References in periodicals archive ?
where [A.sub.l] and [A.sub.t] are the unknown constants which are found as below; [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] are, respectively, the Bose vector-operators of creation and annihilation of electric fields of one ion-wave particle with wave vector [??] which are directed along of the wave normal [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII].
where K = [OMEGA][square root of [epsilon]]/c is the wave number of transverse electromagnetic wave; [??] is the unit vector in direction of wave normal; [[??].sub.0] is the vector amplitude of vector potential.
where K = [[OMEGA][square root of ([epsilon])]/c] is the wave number of transverse electromagnetic wave; [??] is the unit vector in direction of wave normal; [[??].sub.0] is the vector amplitude of vector potential.