Abstract
IT will be remembered that Mr. C. T. R. Wilson described his original cloud expansion apparatus as used for showing the tracks of α- and /β-rays and of X-rays before the Royal Society in April, 1911, and at that time the Cambridge Scientific Instrument Co., Ltd. (now the Cambridge and Paul Instrument Co., Ltd.), took up the manufacture of this apparatus. The manufacture of apparatus of this class was, however, entirely stopped by the war.
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New Apparatus for Showing the Tracks of α-, β-, and X-rays. Nature 107, 697–698 (1921). https://doi.org/10.1038/107697a0
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DOI: https://doi.org/10.1038/107697a0