Abstract

The difference between the index of refraction for green mercury light and for 7 other mercury emission wavelengths from 15 300 A to 3651 A has been measured using a Twyman-Green interferometer as a refractometer. A photoelectric method was used for the infrared determination. A method depending upon photography of interference fringes which were caused to appear crossing the lines in the mercury spectrum was used for the visible and ultraviolet measurements. The mean observed deviation of the measurements of (μ − 1) from the predictions of the Edlén formula was 1 part in 105.

© 1958 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. D. H. Rank and J. N. Shearer, J. Opt. Soc. Am. 45, 406 (1955).
  2. B. Edlén, J. Opt. Soc. Am. 43, 339 (1953).
    [Crossref]
  3. Rank, Bennett, and Bennett, J. Opt. Soc. Am. 46, 477 (1956).
    [Crossref]
  4. Rank, Guenther, Burnett, and Wiggins, J. Opt. Soc. Am. 47, 631 (1957).
    [Crossref]
  5. Burns, Adams, and Longwell, J. Opt. Soc. Am. 40, 339 (1950).
    [Crossref]

1957 (1)

1956 (1)

1955 (1)

D. H. Rank and J. N. Shearer, J. Opt. Soc. Am. 45, 406 (1955).

1953 (1)

1950 (1)

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.


Figures (3)

Fig. 1
Fig. 1

Folded Twyman-Green interferometer equipped with gas cells for refractivity measurements.

Fig. 2
Fig. 2

Intensity contour of the fringes as measured for λ5462 with the PbS cell while the compensating cell was being evacuated.

Fig. 3
Fig. 3

Spectrum showing Twyman-Green fringes on the green and yellow mercury lines and the shadows of the fiducial cross wires.

Tables (1)

Tables Icon

Table II Index of refraction of dry CO2 free air.

Equations (1)

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

( μ x - 1 ) = ( F x / F s ) ( λ x / λ s ) ( μ s - 1 ) ,