Abstract
GRAPHS showing the average hourly intensity of cosmic rays at Cape Town for the years 1933, 1934 and 1935 are submitted by Dr. B. F. J. Schonland, B. Delatizky and J. P. Gaskell. A slight sinusoidal variation is apparent, with a maximum at about 24 hr. local sidereal time and a minimum at 12 hr. The variation appears to be a true sidereal time effect, since it occurs simultaneously in both hemispheres.
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Points from Foregoing Letters. Nature 138, 332 (1936). https://doi.org/10.1038/138332b0
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DOI: https://doi.org/10.1038/138332b0