100 Years of Cosmic Ray Physics

100 years ago this week, on August 7, 1912, Austrian physicists Victor Hess made a monumental discovery. Carrying instrumentation in a series of high-altitude (in excess of 5000m) balloon flights, Hess discovered cosmic rays.

Not only have cosmic rays been instrumental in the study of particle physics, but analysis of the decay rates of muons produced by cosmic rays as a function of altitude have provided a critical experimental confirmation of a key aspect of general relativity, time dilation due to gravity.

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About Glen Mark Martin

MCSE-Messaging. Exchange Administrator at the University of Texas at Austin. Unrepentant armchair physicist.
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