Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957)
[ACTIVE]
The Infrared Transparency of Magnetic Tracks
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPTE
- Volume
- 66, No. 9, pp. 517–522
- Abstract
- The author has discovered that magnetic tracks are substantially transparent to infrared light. Utilizing the infrared sensitivity of the lead-sulfide photoconductive cell, it is shown that excellent reproduction of an optical track can be achieved even though it is completely covered by a magnetic stripe. By thus eliminating the need for half-width stripes, superior magnetic recording quality is obtained while avoiding most of the drawbacks of combined magnetic and optical tracks on composite prints. Potential advantages and applications of the discovery are discussed, and avenues of research for further improvement are pointed out.
- Publication Date
- 1957-09-01
- DOI
10.5594/J11206- ISSN
- Print:
0361-4573 - Link
- https://doi.org/10.5594/J11206
- Author(s)
- George LewinArmy Pictorial Center, 35-11 35th Ave., Long Island City 1, N.Y.
- Copyright
- © 1957 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- Lead-Sulfide Photoconductive Cells in Sound Reproducers [Active]
- Lead-Sulfide Photoconductive Cells for Sound Reproduction [Active]
- Comparison of Lead-Sulfide Photoconductive Cells with Photoemissive Tubes [Active]
- Striped Magnetic Sound in CBS Television News Production [Active]
- 1. Journal SMPTE , 60 : entire issue, especially pp. 466 – 469 , 505–506, 530–531, Apr. 1953 , Part II. EXTERNAL
- 3. D'Arcy Ellis W. , “Standardization needs for 16mm magnetic sound,” Jour. SMPTE , 60 : 530 , Apr. 1953 , Part II. EXTERNAL
- 7. Kerr Maxwell A. , “A ‘go-no-go’ gauging method for visual inspection of release prints,” presented on May 1, 1957, at the Society's Convention at Washington, D.C. EXTERNAL
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George Lewin; The Infrared Transparency of Magnetic Tracks, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J11206
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George Lewin; The Infrared Transparency of Magnetic Tracks, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J11206
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George Lewin; The Infrared Transparency of Magnetic Tracks, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J11206
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<span class="citation">George Lewin; <cite>The Infrared Transparency of Magnetic Tracks</cite>, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957. Available at <a href="https://doi.org/10.5594/J11206" target="_blank" rel="noopener">https://doi.org/10.5594/J11206</a></span>
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George Lewin; The Infrared Transparency of Magnetic Tracks, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957
doi: 10.5594/J11206
url: https://doi.org/10.5594/J11206
doi: 10.5594/J11206
url: https://doi.org/10.5594/J11206
Snippet:
<li> George Lewin; <cite id="bib-10-5594-j11206">The Infrared Transparency of Magnetic Tracks</cite>, Journal of the SMPTE ( Volume: 66, Issue: 9, September 1957); SMPTE, 1957 <span class="doi">10.5594/J11206</span> </li>