acoustic Bessel bullet

acoustic Bessel bullet

[ə¦küs·tik ′be·səl ‚bu̇l·ət]
(acoustics)
One of a class of localized wave solutions to the three-dimensional wave equation that maintain their shape and amplitude as they propagate in space.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.