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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 29, Iss. 1 — Jan. 1, 1939
  • pp: 16–19

A Note on the Color Temperature-Candlepower Characteristic of Tungsten Lamps

K. S. WEAVER and H. E. HUSSONG  »View Author Affiliations


JOSA, Vol. 29, Issue 1, pp. 16-19 (1939)
http://dx.doi.org/10.1364/JOSA.29.000016


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Abstract

<p>Tungsten lamps are now used very extensively in photographic sensitometry, and the wide range of exposure required for various materials makes necessary the accumulation of complete data on lamps of many sizes.</p><p>The characteristics of all tungsten incandescent lamps are similar in form, and in this note are described the average characteristics found for twenty lamps frequently used in this work.</p><p>From a study of the slope of the straight line, best representing the average candlepowercolor temperature relation, it is concluded that the changes in candlepower and color temperature, resulting from a small change in voltage, should be about equally perceptible under good conditions of observation.</p>

Citation
K. S. WEAVER and H. E. HUSSONG, "A Note on the Color Temperature-Candlepower Characteristic of Tungsten Lamps," J. Opt. Soc. Am. 29, 16-19 (1939)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-29-1-16


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References

  1. P. G. Nutting, "Luminosity and Temperature," Bull. Nat. Bur. Standards 6, 337–46 (1909–10).
  2. Marcello Pirani and Hildegard Miething, "Strahlungsenergie, Temperatur, und Helligkeit des schwarzen Körpers," Verhandlungen der deutschen physikalischen Gesellschaft, 17, 219–39 (1915).
  3. W. E. Forsythe and A. G. Worthing, "Properties of Tungsten and the Characteristics of Tungsten Lamps," Astrophys. J. 61, 146–85 (1925).
  4. K. S. Weaver, "The Calculation of Filters for Color Temperature Conversion," J. Opt. Soc. Am. 26, 339–42 (1936).
  5. Francis E. Cady and Henry B. Dates, (editors), Illuminating Engineering for Students and Engineers (John Wiley and Sons Inc., New York, 1925), First edition, p. 106.
  6. L. E. Barbrow and S. J. Franklin Meyer, "Characteristic Equations of Vacuum and Gas-Filled Tungsten Lamps," National Bur. Standards J. Research 9, 721–32 (1932).
  7. Jacinto Steinhardt, "Intensity Discrimination in the Human Eye. I. The Relation of ΔI/I to Intensity," J.General Physiology 20, pp. 185–209 (No. 2, Nov. 20)(1936).
  8. Irwin G. Priest, "A Proposed Scale for Use in Specifying the Chromaticity of Incandescent Illuminants and Various Phases of Daylight," J. Opt. Soc. Am. 23, 41–5 (1933).
  9. Deane B.Judd,"Precision of Color Temperature Measurement under Various Observing Conditions; A New Color Comparator for Incandescent Lamps," National Bur. Standards J. Research 5, 1161–77 (1930).

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