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Optical Engineering

A Multiple-Spark Light Source and Camera for Schlieren and Silhouette Photography
Author(s): David G. Kocher
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Paper Abstract

A multiple-spark light source and camera utilizing the Cranz-Schardin optical method for schlieren and silhouette photography is described. Each light source is a spark in air, with an effective duration of 10-7 second and a peak of light of 24,000 candle power. The interval between successive sparks is independently adjustable from 10-5 to 10-7 second, permitting a variable picture rate to be used in a single sequence of photographs. The equipment contains ten spark light sources and camera lenses, permitting a ten picture sequence of high speed phenomena. Schlieren and silhouette photographs demonstrating the performance of the equipment are presented.

Paper Details

Date Published: 1 September 1963
PDF: 4 pages
Opt. Eng. 1(6) 106207 doi: 10.1117/12.7971238
Published in: Optical Engineering Volume 1, Issue 6
Show Author Affiliations
David G. Kocher, Massachusetts Institute of Technology (United States)

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