Letter | Published:

Nature of Extensive Cosmic Ray Showers

Nature volume 142, pages 716717 (15 October 1938) | Download Citation



THE counter experiments of Auger, Maze and Grivet-Meyer1, and those of Kolhörster, Matthes and Weber2, indicate the existence of very large cosmic ray showers, extending over an area of many square metres, and consisting of several thousand particles. In order to obtain information about the constituents of these showers, a cloud chamber with a 2 cm. lead plate across its centre, situated in a room with a light roof, has been used in a magnetic field of 800 gauss. The chamber was controlled by the five-fold coincidences of counters, distributed so that the outer counters were separated by 5 metres. With this counter arrangement the chamber took, on the average, 0·2 photographs per hour.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1.

    , , and Grivet-, C.R. Acad. Sci., 206, 1721 (1938); 207, 288 (1938).

  2. 2.

    , , and , Naturwtes., 26, 576, 1938.

  3. 3.

    , Proc. Camb. Phil. Soc., in the Press.

Download references

Author information


  1. Physical Laboratories, University of Manchester. Sept. 2.

    • L. JÁNOSSY
    •  & A. C. B. LOVELL


  1. Search for L. JÁNOSSY in:

  2. Search for A. C. B. LOVELL in:

About this article

Publication history




Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.