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Application of the Xenon Arc-Discharge to Experiments in Crop Physiology

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Abstract

A RECENT communication1 described the lighting arrangements in a growth-cabinet with radiation having a spectral energy distribution and intensity equivalent to sunlight at 2,000 lumens per sq. ft. By installing more powerful lamps, this intensity has been substantially raised; but field experiments indicate that it is still below the maximum to which many plants will respond. A quantitative understanding of the morphological and physiological changes at intensities approaching full sunlight is not only of theoretical interest, but also has immediate bearing on a number of pasture problems of considerable economic importance. The xenon arc lamp announced by Aldington2, and the more recently developed air-cooled designs3, appeared to have definite possibilities for meeting this requirement.

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References

  1. Mitchell, K. J., Nature, 166, 35 (1950).

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  2. Aldington, J. N., Trans. Illum. Eng. Soc., 14, No. 2 (1949).

  3. Cumming, H. W., Light and Lighting, 43, No. 3 (March 1950).

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Authors and Affiliations

  1. Research Laboratories, Siemens Electric Lamps and Supplies, Ltd., Preston

    H. W. CUMMING

  2. (Department of Scientific and Industrial Research, New Zealand), Department of Botany, University, Manchester,

    K. J. MITCHELL

Authors
  1. H. W. CUMMING
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  2. K. J. MITCHELL
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CUMMING, H., MITCHELL, K. Application of the Xenon Arc-Discharge to Experiments in Crop Physiology. Nature 167, 567–568 (1951). https://doi.org/10.1038/167567b0

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