books.google.co.uk - This book summarizes the results from the detection of cosmic rays at the surface and in the lower atmosphere of Earth during the fifty years since the invention of the neutron monitor by John A. Simpson in 1948. The properties of solar and galactic cosmic rays in the heliosphere, such as Forbush decreases,...http://books.google.co.uk/books/about/Cosmic_Rays_and_Earth.html?id=HDIXafSCqFwC&utm_source=gb-gplus-shareCosmic Rays and Earth