Letter | Published:

A Cosmic Ray Burst at a Depth equivalent to 800 m. of Water

Naturevolume 140page774 (1937) | Download Citation



UNDER the above title we announced in NATURE1 the results of our measurements in a railway tunnel, in which we observed a burst of the size of about 107 ions at an equivalent depth of more than 800 m. of water. In the note, however, we regret to have made the following statement, which we should like here to withdraw:

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  1. 1

    Nishina Y. and Ishii C., NATURE, 138, 721 (1936).

  2. 2

    Kolhörster, W., Sitz. Preuss. Ak. Wiss., 689 (1933); NATURE, 132, 407 (1933); Z. Phys., 88, 536 (1934). Corlin, A., NATURE, 133, 63 (1934); Ann. Observatory Lund., No. 4, A, 95 (1934).

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  1. Cosmic Ray Sub-Committee of the Japan Society for the Promotion of Scientific Research, Institute of Physical and Chemical Research, Tokyo

    • Y. NISHINA
    •  & C. ISHII


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