Abstract
MR. S. E. FORBUSH1 noted a very striking similarity between the variation of the horizontal component of the earth's magnetic field intensity and of the intensity of the cosmic ray ionization (as registered by two Compton cosmic ray meters) at Cheltenham, Maryland, U.S.A., and Huancayo, Peru, during the very severe magnetic disturbances between April 25 and April 30 of this year.
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Phys. Rev., 51, 1108 (1937).
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HESS, V., DEMMELMAIR, A. World-wide Effect in Cosmic Ray Intensity, as Observed during a Recent Magnetic Storm. Nature 140, 316–317 (1937). https://doi.org/10.1038/140316a0
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DOI: https://doi.org/10.1038/140316a0
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