Training Manual . — Samara: Samara University Publishing House, 2012. — 118 s. — ISBN 978-5-86465-553-5 . This manual is a methodological guide to the study of the section "Physics of the atomic nucleus and elementary particles" of the course "General Physics" of the Federal State Educational Standard of Higher Professional Educational Direction 011200 "Physics" , BZ "Professional" cycle , basic (general professional) part , Qualification (degree) of the graduate - Bachelor . The manual describes such sections as "Galactic cosmic rays and streams of charged particles from the Sun", "The passage of cosmic rays through the Earth's atmosphere", "Radiation background at the Earth's surface". The material presented is illustrated by a number of tasks. Experimental methods of studying the radiation background at the Earth's surface. The experimental work involves a detailed acquaintance with the statistical functions of the distribution in relation to the model of registration of radiation background particles, as well as methods of processing the results of the experiments on the computer. The manual is intended for students, bachelors, masters studying in the direction of "physics" and wishing to get acquainted with this topic. Editor Murzinova T. A. Computer layout, layout of Zirova and . C. Reviewers:Doctor of Physical and Mathematical Sciences, Professor, Head. the Department of Physics of Samara State Aerospace University P. Candidate of Physical and Mathematical Sciences, Associate Professor of the Department of Theoretical Physics of the Volga State Social and Humanitarian Academy Molchatsky L. C.