In this new edition of Holographic and Speckle Interferometry the authors have taken the opportunity to expand considerably the material on applications and to include a more coherent description of a wider range of such applications. This revision reflects the rapid increase in the uses made of the basic technique that has occurred over the past few years. In addition, the bibliography has been updated to include relevant papers published since the first edition appeared. ' … excellent coverage of the necessary optical background and geometrical analysis …' American Scientist ' … excellent exposition of the subject …' The Times Higher Education Supplement ' … clearly written … and can be recommended …' Contemporary Physics ' … a valuable addition to the library …' Optics and Laser Technology