The book "Laser-Strophometry" by Wilfried Staude is the result of two decades of intensive research in the field of laser applications for measuring velocity gradients. The work began with a chance observation by a student who noticed that the scattering pattern of laser light passing through a cuvette filled with diluted milk exhibited unusual movement when he approached it with his thumb. This discovery led to an in-depth theoretical and experimental investigation of the phenomenon, which is attributed to the inhomogeneous velocity of convection within the cuvette. The book provides a comprehensive presentation of the developed measurement methods and the underlying theory that describes the relationship between the pattern movement and the velocity gradient. It is a valuable resource for professionals and students engaged in the application of laser technologies in fluid mechanics and related fields.