Aids for Pictorially Analyzing High-Speed Action
E. M. Watson · Journal of the Society of Motion Picture Engineers · 1944
Many of the objects that concern us are of use only when they are in motion. While we can watch mechanisms that move slowly to determine whether or not their actions confirm performance predictions, the unaided eye is useless to observe high-speed mechanisms. — To find out what is going on some method of visual aid must be employed. While this paper does not cover the entire field of activity in high-speed photography, the more important methods are classified, equipment is described, and various applications are discussed.