Abstract
As part of our cosmic ray programme, we had occasion to measure the absorption in lead of the radiation in a vertical direction on Holborn Underground Tube Station during the years 1937–39. While this work was going on, results of similar measurements underground were published by other workers1. Our work was left unpublished due to the pressure of war activity, but in view of the fact that very few measurements have been made underground, we think the results obtained are worth recording.
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References
Morgan and Nielsen, Phys. Rev., 54, 245 (1938). Wilson, Phys. Rev., 53, 337 (1938). Auger, J. Phys., 6, 253 (1936).
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GEORGE, E. Cosmic Ray Absorption Underground. Nature 157, 296 (1946). https://doi.org/10.1038/157296b0
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DOI: https://doi.org/10.1038/157296b0
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