The Photography of Freely Moving Particles

Paper presented at a Symposium on “Techniques in Applied Photography” organized by The Royal Photographic Society, on 2-3 December 1965 in London.

Abstract

The photography of small moving particles can only be carried out with small depths of field since magnifications greater than unity must be employed for subsequent accurate analysis. Freely moving particles tend to wander from a straight path, particularly in the presence of strong convection fields, and thus may rapidly move out of focus. In this paper a technique is presented which helps to overcome this problem.

Notes

Paper presented at a Symposium on “Techniques in Applied Photography” organized by The Royal Photographic Society, on 2-3 December 1965 in London.