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A JOURNEY THROUGH RESEARCHES ON COSMIC RAYS

Cosmic ray causes hazards to microelectronic circuits. Presence of charged particles in the atmosphere was first noticed by Coloumb in 1785. But cosmic ray was discovered by Victor Hess in 1912. However new era of particle physics was started with the invention of neutron monitor in 1948 by John A. Simpson. New information regarding the energy spectrum, anisotropy, latitudinal, longitudinal and daily variation of cosmic ray has added the scientific yield one by one from the analysis of the data of different monitors over the globe. This paper is a brief account of the striking events of cosmic ray which may be the background of future researchers.