Abstract

Experiments have been made to determine the response of photographic panchromatic emulsions to light flashes lasting only a few microseconds. Previous experiences of other workers and general photographic theory tended to show that the spectral response of plates should show no intermittency effect, i.e., should be the same for short flashes of light and for steady illumination. This was found not to be so and experimental data are provided.

© 1947 Optical Society of America

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References

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  1. W. F. Berg, Proc. Roy. Soc. A174, 559 (1940).
    [Crossref]
  2. J. H. Webb, J. Opt. Soc. Am. 23, 316 (1933);J. Opt. Soc. Am.,  25, 4 (1935).
    [Crossref]
  3. C. E. K. Mees, The Theory of the Photographic Process (The Macmillan Company, New York, 1944).
  4. J. D. Craggs and J. M. Meek, Nature 156, 21 (1945).
    [Crossref]
  5. J. D. Craggs and J. M. Meek, Proc. Roy. Soc. A186, 241 (1946).
    [Crossref]
  6. J. D. Craggs, M. E. Haine, and J. M. Meek, J. Inst. Elec. Eng. (to be published).
  7. J. D. Craggs and W. Hopwood, (to be published).

1946 (1)

J. D. Craggs and J. M. Meek, Proc. Roy. Soc. A186, 241 (1946).
[Crossref]

1945 (1)

J. D. Craggs and J. M. Meek, Nature 156, 21 (1945).
[Crossref]

1940 (1)

W. F. Berg, Proc. Roy. Soc. A174, 559 (1940).
[Crossref]

1933 (1)

Berg, W. F.

W. F. Berg, Proc. Roy. Soc. A174, 559 (1940).
[Crossref]

Craggs, J. D.

J. D. Craggs and J. M. Meek, Proc. Roy. Soc. A186, 241 (1946).
[Crossref]

J. D. Craggs and J. M. Meek, Nature 156, 21 (1945).
[Crossref]

J. D. Craggs, M. E. Haine, and J. M. Meek, J. Inst. Elec. Eng. (to be published).

J. D. Craggs and W. Hopwood, (to be published).

Haine, M. E.

J. D. Craggs, M. E. Haine, and J. M. Meek, J. Inst. Elec. Eng. (to be published).

Hopwood, W.

J. D. Craggs and W. Hopwood, (to be published).

Meek, J. M.

J. D. Craggs and J. M. Meek, Proc. Roy. Soc. A186, 241 (1946).
[Crossref]

J. D. Craggs and J. M. Meek, Nature 156, 21 (1945).
[Crossref]

J. D. Craggs, M. E. Haine, and J. M. Meek, J. Inst. Elec. Eng. (to be published).

Mees, C. E. K.

C. E. K. Mees, The Theory of the Photographic Process (The Macmillan Company, New York, 1944).

Webb, J. H.

J. Opt. Soc. Am. (1)

Nature (1)

J. D. Craggs and J. M. Meek, Nature 156, 21 (1945).
[Crossref]

Proc. Roy. Soc. (2)

J. D. Craggs and J. M. Meek, Proc. Roy. Soc. A186, 241 (1946).
[Crossref]

W. F. Berg, Proc. Roy. Soc. A174, 559 (1940).
[Crossref]

Other (3)

C. E. K. Mees, The Theory of the Photographic Process (The Macmillan Company, New York, 1944).

J. D. Craggs, M. E. Haine, and J. M. Meek, J. Inst. Elec. Eng. (to be published).

J. D. Craggs and W. Hopwood, (to be published).

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Figures (8)

F. 1
F. 1

Optical system used in plate tests.

F. 2
F. 2

Plate response with tungsten lamp. All three curves are derived from one plate (one exposure) and correction is made for varying emission with wave-length (from published data on emission characteristics of tungsten filaments).

F. 3
F. 3

Plate response with hydrogen sparks. (1-microsec. duration, run at a recurrence rate of ∼100 sec.)

F. 4
F. 4

Differential spectral response of plates to intermittent and steady light. (4-microsec. pulses.)

F. 5
F. 5

Differential spectral response of plates to intermittent and steady light. (1-microsec. pulses.)

F. 6
F. 6

Differential spectral response of a photographic plate to intermittent and steady light. (10-microsec. pulses.)

F. 7
F. 7

Differential spectral response of a photographic plate to intermittent and steady light. (10-microsec. pulses.)

F. 8
F. 8

Differential spectral response of a photographic plate (different sample from that analyzed in Fig. 7) to intermittent and steady light. (10-microsec. pulses.)

Tables (2)

Equations (3)

Equations on this page are rendered with MathJax. Learn more.

I H α I 6563 A
I H β I 4861 A
I H γ I 4340 A