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A STANDARD MICRO-CINEMATOGRAPHIC APPARATUS
Heinz Rosenberger*
MOTION pictures have been used frequently in science and education. Their greatest value for scientific investigations lies in their domination of time. Very rapid movements photographed with the slow motion camera, and very slow movements taken with the time lapse camera are translated into perceptible speeds.
Another point in favor of motion pictures as applied to science is their usefulness for the study and demonstration of microscopical phenomena.
Except for a few attachments to be used by amateur photographers for their cameras, there has been, up to the present, no microcinema equipment available for scientific purposes. Attempts have been made by microscope manufacturers abroad to construct microcinema apparatus suitable for laboratories, but the results have not been encouraging. The designers of these apparatuses had erroneous basic ideas, for they had little or no conception of the requirements of research work.
The constant demand for a micro-cinema machine w^hich would meet the requirements of research work and the production of educational films, brought the author, a microscopist as well as a trained engineer, to the study of what such a machine must accomplish. Apparatus devised by the author have been used in the production of the films of Dr. Alexis Carrel on living cells and of the late Dr. Hideyo Noguchi on Leishmanias and Trypanosomas.
Figure 1 represents the latest model of a complete micro-cinema apparatus which is the result of many years of experience. This machine has the especial advantage of being practical, efficient, and within the means of the average laboratory.
The instrument consists of four parts: (1) the optical bench with microscope and light source; (2) the camera table and stand with driving and timing mechanisms, exposure counter, and revolv
• The Rockefeller Institute for Medical Research, New York., N. Y.
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