Abstract
IN a recent letter1 Dr. R. A. Houstoun treats equally as vacuum photo-cells the KMV6 and the KV6, both of which are made in these laboratories. The KMV6 is highly evacuated, but the KV6 always contains an appreciable quantity of hydrogen evolved from the sensitized potassium; it should not be regarded as a true vacuum cell.
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NATURE, 139, 29 (Jan. 2, 1937).
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CAMPBELL, N. Time Lag in the Vacuum Photo-Cell. Nature 139, 330 (1937). https://doi.org/10.1038/139330b0
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DOI: https://doi.org/10.1038/139330b0
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