Abstract
THE Wordie Expedition of 1937 to Baffin Bay1 gave us an opportunity of making measurements of cosmic radiation at great heights in the atmosphere near the magnetic axis-pole. Free balloons were used, the method employed being that of Prof. E. Regener, to whom we are very much indebted for invaluable help. Our two most successful flights were made within 5° of the pole, one with an ionization chamber and one with a triple counter set giving coincidences for vertical rays. The result of the ionization chamber flight is shown in Fig. 1 and that of the counter flight in Fig. 2.
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CARMICHAEL, H., DYMOND, E. High-Altitude Cosmic Radiation Measurements near the Magnetic Axis-Pole. Nature 141, 910–911 (1938). https://doi.org/10.1038/141910a0
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DOI: https://doi.org/10.1038/141910a0
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