Abstract
A new method of interferometry, based upon holographic photography, is described. The interferometer uses a common optical path in which beam separation is achieved by two exposures separated in time. Its significant advantages are (1) accurate alignment and precision optical elements are not required, (2) differential interferometry, used to measure small changes in either optical path or position of complex subjects, is easily performed, (3) a complete three-dimensional record of the interference phenomena is obtained, permitting post-exposure focusing and examination from various directions, and (4) the technique is well-suited to the recording of transient as well as stationary phenomena. Experimental examples of its use with aerodynamic phenomena are given.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
