Abstract:
Two motives are responsible for the investigation of cosmic rays. Firstly they provide the only source at present availabe of
particles with extremely high energy. To study interactions between fundamental particles at energies greater
than about 6 x 109 ev. therefore,
one must turn to cosmic rays. Interest in geophysics and astrophysics provides the other motive. For example, a theory of the origin of cosmic rays must form an integral part of the astronomer's explnation of the universe. The prob1em of the origin of the cosmic radiation is still looking at satisfactory solution. Further, much information about the physics of the
solar system and the earth may be obtained from a world wide distribution of
cosmic ray observatories.
