Submicrosecond Flash Sources

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Design details are given for two submicrosecond flash sources for photography by reflected light, silhouette and schlieren techniques. The source for reflected-light photography uses a “guided” air spark operated at 18 kv with 0.05 μf to produce a 0.4-μsec flash with a peak light of 5 million candlepower. The flashtube, a special design, is described, together with its power supply and trigger circuit. The trigger circuit can be operated by a microphone, phototube, contactor or other electrical signal, and incorporates an adjustable time delay. A photograph taken with the unit is shown. A small spark source capable of producing flashes of about 10 mμsec duration for silhouette and schlieren photography is described. Relative peak light output and flash duration are given as a function of pressure for air, nitrogen, oxygen, carbon dioxide, hydrogen and argon. Gap resistance is given as a function of gap length, for air.
Publication Date: 1961-03-01
DOI: 10.5594/J16931
Link: https://doi.org/10.5594/J16931
Author(s): Harold E. Edgerton, John Tredwell, Kenneth W. Cooper

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 70, Issue: 3, March 1961); SMPTE, 1961. Available at https://doi.org/10.5594/J16931

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 70, Issue: 3, March 1961); SMPTE, 1961. Available at https://doi.org/10.5594/J16931

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<span class="citation">Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; <cite>Submicrosecond Flash Sources</cite>, Journal of the SMPTE ( Volume: 70, Issue: 3, March 1961); SMPTE, 1961. Available at <a href="https://doi.org/10.5594/J16931" target="_blank" rel="noopener">https://doi.org/10.5594/J16931</a></span>

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 70, Issue: 3, March 1961); SMPTE, 1961
doi: 10.5594/J16931
url: https://doi.org/10.5594/J16931

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; <cite id="bib-10-5594-j16931">Submicrosecond Flash Sources</cite>, Journal of the SMPTE ( Volume: 70, Issue: 3, March 1961); SMPTE, 1961
<span class="doi">10.5594/J16931</span>
</li>