Abstract

With a quartz spectrograph, sodium hydride quartz photoelectric cell and quadrant electrometer, measurements were made in the ultraviolet spectrum region λ4000 to 2500A of the light absorption coefficients of pure water and sea water and of the molecular absorption coefficients of aqueous solutions of the principle salts in the sea, namely, NaCl, KCl, MgCl<sub>2</sub>, MgSO<sub>4</sub> and CaSO<sub>4</sub>. The transparency of the sea water declines rapidly with decreasing wave length in the ultraviolet becoming quite small below λ3000A. From λ3400 to 3000A, CaSO<sub>4</sub> contributes about half to the absorption of sea water, H<sub>2</sub>O about a fourth and the other salts the rest; from λ3000 to 2500A, MgCl<sub>2</sub>, CaSO<sub>4</sub> and H<sub>2</sub>O each contribute roughly a third; the other salts giving relatively little absorption. There is a close correspondence between the falling off in the transparency of the sea with decreasing wave length in the ultra violet and the spectral energy curve of sunlight. This, together with the very similar correspondence in the case of the transparency of the atmosphere permits the suggestion that the actinic effects of sunlight may have played a part, perhaps more important than has been heretofore recognized, in the constitution of the sea and the air.

PDF Article

References

  • View by:
  • |
  • |
  • |

  1. Martin Journ. Phys. Chem., 26, p. 471; 1922.
  2. Aufsess, Ann. d. Phys., 13,1904.
  3. Kreusler, Ann. d. Phys., 6, p. 412; 1901.
  4. Hulburt, J.O.S.A., & R.S.I. 13, p. 553; 1926.
  5. Raman, Proc. Roy. Soc., 101, p. 64; 1922. "Molecular Diffraction of Light," Calcutta University Press, 1922.
  6. Thorpe, "Dictionary of Applied Chemistry," 7, p. 379; 1927. Clark, "The Data of Geochemistry," Bull. 770, U. S. Geological Survey, 1924.
  7. Getman, Journ. Phys. Chem. 29, 853 (1925).
  8. Hulburt and Hutchinson, Carnegie Instit. Pub., 260; 1918...
  9. Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

1927 (1)

Thorpe, "Dictionary of Applied Chemistry," 7, p. 379; 1927. Clark, "The Data of Geochemistry," Bull. 770, U. S. Geological Survey, 1924.

1926 (1)

Hulburt, J.O.S.A., & R.S.I. 13, p. 553; 1926.

1925 (1)

Getman, Journ. Phys. Chem. 29, 853 (1925).

1922 (2)

Raman, Proc. Roy. Soc., 101, p. 64; 1922. "Molecular Diffraction of Light," Calcutta University Press, 1922.

Martin Journ. Phys. Chem., 26, p. 471; 1922.

1918 (1)

Hulburt and Hutchinson, Carnegie Instit. Pub., 260; 1918...

1913 (1)

Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

1904 (1)

Aufsess, Ann. d. Phys., 13,1904.

1901 (1)

Kreusler, Ann. d. Phys., 6, p. 412; 1901.

Abbott,

Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

Aldrich,

Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

Aufsess,

Aufsess, Ann. d. Phys., 13,1904.

Fowle,

Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

Getman,

Getman, Journ. Phys. Chem. 29, 853 (1925).

Hulburt,

Hulburt, J.O.S.A., & R.S.I. 13, p. 553; 1926.

Hulburt and Hutchinson, Carnegie Instit. Pub., 260; 1918...

Hutchinson,

Hulburt and Hutchinson, Carnegie Instit. Pub., 260; 1918...

Journ, Martin

Martin Journ. Phys. Chem., 26, p. 471; 1922.

Kreusler,

Kreusler, Ann. d. Phys., 6, p. 412; 1901.

Raman,

Raman, Proc. Roy. Soc., 101, p. 64; 1922. "Molecular Diffraction of Light," Calcutta University Press, 1922.

Thorpe,

Thorpe, "Dictionary of Applied Chemistry," 7, p. 379; 1927. Clark, "The Data of Geochemistry," Bull. 770, U. S. Geological Survey, 1924.

Other (9)

Martin Journ. Phys. Chem., 26, p. 471; 1922.

Aufsess, Ann. d. Phys., 13,1904.

Kreusler, Ann. d. Phys., 6, p. 412; 1901.

Hulburt, J.O.S.A., & R.S.I. 13, p. 553; 1926.

Raman, Proc. Roy. Soc., 101, p. 64; 1922. "Molecular Diffraction of Light," Calcutta University Press, 1922.

Thorpe, "Dictionary of Applied Chemistry," 7, p. 379; 1927. Clark, "The Data of Geochemistry," Bull. 770, U. S. Geological Survey, 1924.

Getman, Journ. Phys. Chem. 29, 853 (1925).

Hulburt and Hutchinson, Carnegie Instit. Pub., 260; 1918...

Abbott, Fowle and Aldrich, Annals of the Astrophysical Observatory of the Smithsonian Institution, 3, p. 197; 1913.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.