Schlieren Photography in Physics

Author: M. A. Mreazeale
Publication: SPIE, 1998

Schlieren photography has been used many years in physics; however it has proven to be exceptionally valuable in the study of ultrasonic waves in liquids. Part of the reason for its value is that many of the ultrasonic phenomena studied have their optical analogues. Thus, when one studies ultrasonic images he actually is studying a general wave phenomenon from a perspective that is impossible with light alone. Examples are given of ultrasonic schlieren photographs as are conclusions possible from their study.