By Mario Bertolotti

The publication describes from a old viewpoint how cosmic rays have been came upon. The publication describes the study in cosmic rays. the focus is on how the data used to be won, describing the most experiments and the conclusions drawn. Biographical sketches of major researchers are supplied. Cosmic rays have an reputable date of discovery that's associated with the recognized balloon flights of the Austrian physicist Hess in 1912. The 12 months 2012 can consequently be thought of the centenary of the invention.

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Philip; in Leningrad by D. Skobelzyn (1892–1990); in Tokyo by S. Kikuchi. However Cambridge was the main research centre with the cloud chamber. In 1913 the Cambridge Scientific Instrument Company, in UK, had produced commercial versions of the chamber, with the assistance from Wilson, and in 1927 the chamber was used for demonstrations to students. An advertisement on Philosophical Magazine in May 1926 was accompanied with the slogan “The most wonderful experiment in the world” as a declaration attributed to an anonymous eminent physicist (see Fig.

R. Wilson, Proc. R. Soc. Lond. 59, 338 (1896) 16. R. Wilson, Proc. Camb. Phil. Soc. 9, 337 (1897) 17. J. Elster, H. Geitel, Ann. Phys. 2, 425 (1900) 18. J. Elster, H. Geitel, Phys. Z. 2, 560 (1900) 19. A. Pais, Rev. Mod. Phys. 49, 925 (1977) 20. F. Linss, Meteorol. Z. 4, 345 (1887) 21. R. Wilson, Proc. R. Soc. Lond. A 68, 151 (1901) 22. R. Wilson, Proc. R. Soc. Lond. A 68, 151 (1901) (at p. 152) 23. R. Wilson, Proc. Camb. Phil. Soc. 11, 32 (1900) 24. R. Wilson, Nature 63, 195 (1900) 25. H. Geitel, Phys.

85, 175 (1911) Chapter 2 The Discovery: Victor F. 1 Hess and the Balloon Ascents The study of the causes of air ionization had reached a state of total uncertainty, when the Austrian physicist Victor Hess became interested in the problem and started a series of balloon ascents that culminated in a memorable flight in August 1912, which convinced him that the origin of a part of the radiation was extraterrestrial. Victor Franz Hess was born on 24 June 1883 in Schloss Waldstein, near Peggau in Steiermark, Austria.

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