Assertion: cosmic ray's energy | /r/HasProperty | 87 mev
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text: This view of the nature of the initiation of the shower was mistaken, but this does not invalidate Auger's remarkable conclusion about the energy: simply taking the average particle energy to be about the critical energy (87 MeV for air), and considering the energy expended in ionization in the atmosphere, he estimated the total energy of the shower, and hence of the primary particle, to be ∼ 1015 eV.