Abstract
IN a well-known experiment, Marx and Lichtenecker1 swept the image of a narrow slit across the cathode of a photo-cell by means of a mirror that could be rotated at speeds up to 170 revolutions per second, and found that the photoelectric current was constant, no matter at what speed the mirror was rotated. The shortest duration of illumination at any point on the cathode was 1.46 × 107 sec. The experiment was taken to mean that the cell had no time lag or period of induction comparable with this interval.
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References
Ann. Phys., 41, 124 (1913).
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HOUSTOUN, R. Time Lag of the Vacuum Photo-Cell. Nature 139, 29–30 (1937). https://doi.org/10.1038/139029b0
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DOI: https://doi.org/10.1038/139029b0
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