lateral quadrupole

lateral quadrupole

[′lad·ə·rəl ′kwäd·rə‚pōl]
(acoustics)
A sound source resulting from a variation of a component of the velocity of matter in a direction perpendicular to the velocity component.
(electromagnetism)
An electric or magnetic quadrupole which produces a field equivalent to that of two equal and opposite electric or magnetic dipoles separated by a small distance perpendicular to the direction of the dipoles.