Letter | Published:

New Infra-Red Bands Photographed in the Absorption Spectrum of Acetylene

Naturevolume 130page403 (1932) | Download Citation

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Abstract

WE have recently investigated the vibration-rotation spectrum of acetylene in the near infra-red. This absorption spectrum has been photographed in the first order of the 21 ft. Rowland concave grating which has been recently set up in a Runge-Paschen mounting Various lengths of absorbing gas have been used, namely, 3, 6, and 9 metres, at atmospheric pressure. Employing the new Kodak zenocyanine infra-red plates, we have been able to extend our investigations beyond 1μ.

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References

  1. 1

    K. Hedfeld and K. Mecke, Z. f. Phys., 64, 151; 1930.

  2. 2

    B. Badger, Phys. Rev., 35, 1433; 1930.

  3. 3

    M. Dennison, Rev. Mod. Phys., 3, 280; 1931.

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Affiliations

  1. Physical Laboratories, University of Manchester

    • W. LOCHTE-HOLTGREVEN
    •  & E. EASTWOOD

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https://doi.org/10.1038/130403a0

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