Abstract

A survey has been made of the systems used for the presentation of absorption spectra data in textbooks and journals. An attempt has been made to determine the accepted nomenclature systems, and recommendations have been made where there is some uncertainty as to proper or desirable form of presentation. Examples of data and graphical relation of values have been given to show the relative form of data as presented by different systems.

© 1949 Optical Society of America

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References

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  1. R. Bunsen and H. E. Roscoe, Pogg. Ann. Physik 101, 235 (1857).
    [Crossref]
  2. Variations in the earlier absorption equations, such as the use of natural logarithmic formulas and the inclusion of the concentration factor in the extinction constant, have been omitted in this discussion.
  3. A. Beer, Pogg. Ann. Physik 86, 78 (1852).
    [Crossref]
  4. A. C. Hardy and F. M. Young, J. Opt. Soc. Am. 38, 854 (1948).
    [Crossref]
  5. Lambert (1760), reprinted in Ostwald’s Klassiker der exakten Wissenschaften, No. 32.
  6. H. Kayser, Handbuch der Spektroscopie (I. Hirzel, Leipzig, 1905), Vol. 3, p. 14.
  7. H. K. Hughes and et al., “Letter symbols for physics” (A.S.M.E., New York, 1948).
  8. Terminology and symbols for use in ultraviolet, visible, and infrared absorptomelry, Letter Circular LC 857, National Bureau of Standards, May19, 1947;K. S. Gibson, Colorimetry, Nat. Bur. Stand. Circular No. 484 (in press).
  9. R. M. Evans, An Introduction to Color (John Wiley and Sons, Inc., New York, 1948).
  10. D. B. Judd, Colorimetry, Nat. Bur. Stand. Circular No. 478 (1949) (in press).
  11. D. B. Judd and K. L. Kelly, J. Research, Nat. Bur. Stand. 23, 355 (1939).
    [Crossref]
  12. Committee on Colorimetry, J. Opt. Soc. Am. 33, 534, 544 (1947);J. Opt. Soc. Am. 34, 183, 245, 633 (1944);J. Opt. Soc. Am. 35, 1 (1945).
  13. W. A. Shurcliff, J. Opt. Soc. Am. 32, 229 (1942).
    [Crossref]
  14. W. R. Brode, J. Am. Chem. Soc. 48, 1877 (1926).
    [Crossref]

1948 (1)

1947 (1)

1942 (1)

1939 (1)

D. B. Judd and K. L. Kelly, J. Research, Nat. Bur. Stand. 23, 355 (1939).
[Crossref]

1926 (1)

W. R. Brode, J. Am. Chem. Soc. 48, 1877 (1926).
[Crossref]

1857 (1)

R. Bunsen and H. E. Roscoe, Pogg. Ann. Physik 101, 235 (1857).
[Crossref]

1852 (1)

A. Beer, Pogg. Ann. Physik 86, 78 (1852).
[Crossref]

Beer, A.

A. Beer, Pogg. Ann. Physik 86, 78 (1852).
[Crossref]

Brode, W. R.

W. R. Brode, J. Am. Chem. Soc. 48, 1877 (1926).
[Crossref]

Bunsen, R.

R. Bunsen and H. E. Roscoe, Pogg. Ann. Physik 101, 235 (1857).
[Crossref]

Evans, R. M.

R. M. Evans, An Introduction to Color (John Wiley and Sons, Inc., New York, 1948).

Hardy, A. C.

Hughes, H. K.

H. K. Hughes and et al., “Letter symbols for physics” (A.S.M.E., New York, 1948).

Judd, D. B.

D. B. Judd and K. L. Kelly, J. Research, Nat. Bur. Stand. 23, 355 (1939).
[Crossref]

D. B. Judd, Colorimetry, Nat. Bur. Stand. Circular No. 478 (1949) (in press).

Kayser, H.

H. Kayser, Handbuch der Spektroscopie (I. Hirzel, Leipzig, 1905), Vol. 3, p. 14.

Kelly, K. L.

D. B. Judd and K. L. Kelly, J. Research, Nat. Bur. Stand. 23, 355 (1939).
[Crossref]

Lambert,

Lambert (1760), reprinted in Ostwald’s Klassiker der exakten Wissenschaften, No. 32.

Ostwald,

Lambert (1760), reprinted in Ostwald’s Klassiker der exakten Wissenschaften, No. 32.

Roscoe, H. E.

R. Bunsen and H. E. Roscoe, Pogg. Ann. Physik 101, 235 (1857).
[Crossref]

Shurcliff, W. A.

Young, F. M.

J. Am. Chem. Soc. (1)

W. R. Brode, J. Am. Chem. Soc. 48, 1877 (1926).
[Crossref]

J. Opt. Soc. Am. (3)

J. Research, Nat. Bur. Stand. (1)

D. B. Judd and K. L. Kelly, J. Research, Nat. Bur. Stand. 23, 355 (1939).
[Crossref]

Pogg. Ann. Physik (2)

A. Beer, Pogg. Ann. Physik 86, 78 (1852).
[Crossref]

R. Bunsen and H. E. Roscoe, Pogg. Ann. Physik 101, 235 (1857).
[Crossref]

Other (7)

Variations in the earlier absorption equations, such as the use of natural logarithmic formulas and the inclusion of the concentration factor in the extinction constant, have been omitted in this discussion.

Lambert (1760), reprinted in Ostwald’s Klassiker der exakten Wissenschaften, No. 32.

H. Kayser, Handbuch der Spektroscopie (I. Hirzel, Leipzig, 1905), Vol. 3, p. 14.

H. K. Hughes and et al., “Letter symbols for physics” (A.S.M.E., New York, 1948).

Terminology and symbols for use in ultraviolet, visible, and infrared absorptomelry, Letter Circular LC 857, National Bureau of Standards, May19, 1947;K. S. Gibson, Colorimetry, Nat. Bur. Stand. Circular No. 484 (in press).

R. M. Evans, An Introduction to Color (John Wiley and Sons, Inc., New York, 1948).

D. B. Judd, Colorimetry, Nat. Bur. Stand. Circular No. 478 (1949) (in press).

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Figures (8)

F. 1
F. 1

Graphical indication of transmission terms.

F. 2
F. 2

Comparison of transmittance (a), absorbance (b), and log absorbance (c) presentation of absorption spectra data.

F. 3
F. 3

Radiant energy spectrum.

F. 4
F. 4

Wave-length-frequency relation in near infra-red, visible and ultraviolet region.

F. 5
F. 5

Wave-length-frequency relation in infra-red region.

F. 6
F. 6

Ultraviolet spectrum of benzene in isooctane. Cone. 0.432 g. per liter; cell thickness 1.0 cm.

F. 7
F. 7

Infra-red absorption spectra of 1-methy]-2-ethylbenzene. (Data recalculated from NBS—API Proj. No. 44—Serial 349—(Naval Res. Lab.) Cell thickness: ——— 0.250 cm; — — — 0.125 cm; – – – – – 0.025 cm. Upper curve in percent transmittance, lower curve in absorbance; both curves plotted linear in wave-length.

F. 8
F. 8

Infra-red absorption spectra of 1-methyl-2-ethylbenzene (same as Fig. 7) recorded in absorbance and linear in wave number from 700 to 2000 cm−1 (15 to 5μ).

Tables (6)

Tables Icon

Table II Notation for absorption and transmission as used in textbooks.

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Table III Absorption and transmission notation as used in current technical journals (approximately 1000 articles in 1946 to 1949).

Tables Icon

Table IV Wave-length units for recording absorption spectra.

Tables Icon

Table V Wave-length, wave number, and frequency notation in applied technical literature (nearly 1000 articles from 1946 to 1949) for absorption spectra description. (Numbers indicate number of times used, * indicates authors recommended notation (see Tables IV and VI); (see note to Table III).

Tables Icon

Table VI Frequency and wave number units for recording absorption spectra.

Equations (3)

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1 / wave-lengh = wave number = frequency / speed of light ,
1 / λ = ν = ν / c .
ν ¯