Abstract

The absorption coefficient of chemically pure, fairly dust free water was measured by photographic photometry by using tubes of water up to 272 cm long. γ, defined by i=i0eγx, where x is in cm, was 0.8, 1.9, 4.3, 7.7, 13.5 and 80×10−3 at wave-lengths 4000, 3600, 3200, 2800, 2400 and 2000A, respectively. The values were more than 10 times those calculated from molecular scattering. For the visible wave-lengths 5400, 5890, 6700 and 6900A γ was 0.0004, 0.0014, 0.0034 and 0.0039, in good agreement with the measurements of Aufsess. For wave-lengths from 4000 to 5400A γ was less than 0.0004 and was too small to be measured with the length of tubes used.

© 1934 Optical Society of America

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References

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  1. Kreusler, Ann. d. Physik 6, 412 (1901).
    [Crossref]
  2. Tsukamoto, Rev. d’ Optique 7, 89 (1928).
  3. Hulburt, J.O.S.A. and R.S.I. 17, 15 (1928).
    [Crossref]
  4. Hodgman, J.O.S.A. 23, 426 (1933).
    [Crossref]
  5. Webb, J.O.S.A. 23, 157 (1933).
    [Crossref]
  6. Raman, Molecular Diffraction of Light, page 541922, Calcutta University Press.
  7. Aufsess, Ann. d. Physik 13, 678 (1904).
    [Crossref]
  8. Martin, J. Phys. Chem. 26, 471 (1922).
    [Crossref]

1933 (2)

Hodgman, J.O.S.A. 23, 426 (1933).
[Crossref]

Webb, J.O.S.A. 23, 157 (1933).
[Crossref]

1928 (2)

Tsukamoto, Rev. d’ Optique 7, 89 (1928).

Hulburt, J.O.S.A. and R.S.I. 17, 15 (1928).
[Crossref]

1922 (1)

Martin, J. Phys. Chem. 26, 471 (1922).
[Crossref]

1904 (1)

Aufsess, Ann. d. Physik 13, 678 (1904).
[Crossref]

1901 (1)

Kreusler, Ann. d. Physik 6, 412 (1901).
[Crossref]

Aufsess,

Aufsess, Ann. d. Physik 13, 678 (1904).
[Crossref]

Hodgman,

Hodgman, J.O.S.A. 23, 426 (1933).
[Crossref]

Hulburt,

Hulburt, J.O.S.A. and R.S.I. 17, 15 (1928).
[Crossref]

Kreusler,

Kreusler, Ann. d. Physik 6, 412 (1901).
[Crossref]

Martin,

Martin, J. Phys. Chem. 26, 471 (1922).
[Crossref]

Raman,

Raman, Molecular Diffraction of Light, page 541922, Calcutta University Press.

Tsukamoto,

Tsukamoto, Rev. d’ Optique 7, 89 (1928).

Webb,

Webb, J.O.S.A. 23, 157 (1933).
[Crossref]

Ann. d. Physik (2)

Kreusler, Ann. d. Physik 6, 412 (1901).
[Crossref]

Aufsess, Ann. d. Physik 13, 678 (1904).
[Crossref]

J. Phys. Chem. (1)

Martin, J. Phys. Chem. 26, 471 (1922).
[Crossref]

J.O.S.A. (2)

Hodgman, J.O.S.A. 23, 426 (1933).
[Crossref]

Webb, J.O.S.A. 23, 157 (1933).
[Crossref]

J.O.S.A. and R.S.I. (1)

Hulburt, J.O.S.A. and R.S.I. 17, 15 (1928).
[Crossref]

Rev. d’ Optique (1)

Tsukamoto, Rev. d’ Optique 7, 89 (1928).

Other (1)

Raman, Molecular Diffraction of Light, page 541922, Calcutta University Press.

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Figures (3)

Fig. 1
Fig. 1

Apparatus for measuring absorption.

Fig. 2
Fig. 2

Ultraviolet absorption coefficient of water, curves 1 and 1′ observed, curves 2 and 2′ calculated from molecular scattering.

Fig. 3
Fig. 3

Absorption coefficient of water for visible light; crosses, uncorrected values of Aufsess;7 squares and broken line, corrected values; dots from Table II.

Equations (1)

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i = i 1 e - γ ( x - x 1 ) ,