Paper A–6: Submicrosecond Flash Sources

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 71, No. 1A, pp. 29–32
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 functions 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: 1962-01-01
DOI: 10.5594/J18063
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J18063
Author(s): Harold E. EdgertonDept. of Electrical Engineering, Massachusetts Institute of Technology, Cambridge 39, Mass.
John TredwellDept. of Electrical Engineering, Massachusetts Institute of Technology, Cambridge 39, Mass.
Kenneth W. CooperDept. of Electrical Engineering, Massachusetts Institute of Technology, Cambridge 39, Mass.
Copyright: © 1962 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Simple Electronic Devices for High-Speed Photography and Cinematography [Active]
10. AGARDograph 22, Nov. 1956 . EXTERNAL
11. Tredwell J. , “The guided air spark as a light source,” M.I.T. Thesis, M.S., Elec. Eng. Dept. , 1960 . EXTERNAL
2. Looms J. S. T. North R. J. , “Short duration spark light sources,” Proc. 3rd International Congress on High-Speed Photography, p. 62 , Butterworths Scientific Publications , 88 Kingsway, London W.C. 2 ; in U.S., Academic Press, 111 Fifth Ave., New York 3, 1957 . EXTERNAL
3. Prescott Rochelle , “An introduction to spark shadowgraph techniques,” Phot. Eng. , 3 : 121 , 1952 . EXTERNAL
4. Schardin H. Funfer J. , “Grundlagen der Funkenkinematographie,” Z. angew. Phys. , 4 : 185 – 199 , 224 – 238 , 1952 . EXTERNAL
5. Tawil E. P. , “Guided air sparks,” Proc. 3rd International Congress on High-Speed Photography, p. 9 , Butterworths Scientific Publications , 88 Kingsway, London W.C. 2 ; in U.S., Academic Press, 111 Fifth Ave., New York 3, 1957 . EXTERNAL
6. Vanyukov M. P. Mak A. A. , “High-intensity pulsed light sources,” Soviet Physics Uspekhi , 66 : 137 – 155 , 1958 . Translation available in the U.S.A. EXTERNAL
7. Edgerton H. E. , “Submicrosecond flashes of light,” Proc. 4th International Congress on High-Speed Photography, p. 91 , Verlag Dr. Othmar Helwich , Hoffmannstr. 59, Darmstadt, Germany , 1959 . EXTERNAL
8. Cooper K. W. Jr. , “An investigation of spark discharge phenomena in the millimicrosecond region,” M.I.T. Thesis, M.S., Elec. Eng. Dept , 1959 . EXTERNAL
9. Fisher H. , “Simple submicrosecond light source with extreme brightness,” J. Opt. Soc. Am. , 981 – 984 , Nov. 1957 . EXTERNAL

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Paper A–6: Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18063

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Paper A–6: Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18063

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<span class="citation">Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; <cite>Paper A–6: Submicrosecond Flash Sources</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18063" target="_blank" rel="noopener">https://doi.org/10.5594/J18063</a></span>

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Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; Paper A–6: Submicrosecond Flash Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
doi: 10.5594/J18063
url: https://doi.org/10.5594/J18063

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<li>
Harold E. Edgerton, John Tredwell, and Kenneth W. Cooper; <cite id="bib-10-5594-j18063">Paper A–6: Submicrosecond Flash Sources</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18063</span>
</li>