Increasingly, the techniques of optical measurement are being used to solve problems in experimental mechanics. This book meets the need for an up-to-date exposition of optical methods in experimental mechanics. Professor Cloud efficiently integrates optics theory with the development of optical methods. Techniques discussed include classical interferometry, photoelasticity, geometric moire, optical spatial filtering, intermediate sensitivity moire, holographic interferometry and phase measurement techniques. Cloud provides a firm base in the physical principles and at the same time allows the reader to perform meaningful experiments related to the topic being studied. Such a user-oriented approach will appeal to both students and practicing engineers.