Abstract

The near infrared absorption spectrum of liquid water at 20°C has been reinvestigated using a PbS cell detector system. The total spectral range investigated was from 0.70 to 2.50μ. A curve is included which shows five prominent absorption bands at 0.76, 0.97, 1.19, 1.45, and 1.94μ; and a table gives experimental results of water absorption at 20°C.

© 1951 Optical Society of America

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References

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  1. E. O. Hulburt and J. F. Hutchinson, Carnegie Institute of Washington Publication No. 260, 9 (1917).
  2. J. F. Collins, Phys. Rev. 26, 771 (1925).
    [Crossref]
  3. N. E. Dorsey, Properties of Ordinary Water Substance (Reinhold Publishing Corporation, New York, 1940).

1925 (1)

J. F. Collins, Phys. Rev. 26, 771 (1925).
[Crossref]

1917 (1)

E. O. Hulburt and J. F. Hutchinson, Carnegie Institute of Washington Publication No. 260, 9 (1917).

Collins, J. F.

J. F. Collins, Phys. Rev. 26, 771 (1925).
[Crossref]

Dorsey, N. E.

N. E. Dorsey, Properties of Ordinary Water Substance (Reinhold Publishing Corporation, New York, 1940).

Hulburt, E. O.

E. O. Hulburt and J. F. Hutchinson, Carnegie Institute of Washington Publication No. 260, 9 (1917).

Hutchinson, J. F.

E. O. Hulburt and J. F. Hutchinson, Carnegie Institute of Washington Publication No. 260, 9 (1917).

Carnegie Institute of Washington Publication No. 260 (1)

E. O. Hulburt and J. F. Hutchinson, Carnegie Institute of Washington Publication No. 260, 9 (1917).

Phys. Rev. (1)

J. F. Collins, Phys. Rev. 26, 771 (1925).
[Crossref]

Other (1)

N. E. Dorsey, Properties of Ordinary Water Substance (Reinhold Publishing Corporation, New York, 1940).

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Figures (2)

Fig. 1
Fig. 1

Diagram of experimental arrangement.

Fig. 2
Fig. 2

Absorption coefficients of water at 20°C.

Tables (1)

Tables Icon

Table I Water absorption at 20°C.

Equations (3)

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I = I 0 e - α x ,
T = I / I 0 ,
α = ( 1 / x ) ln ( 1 / T ) .