EXAMPLE 26 The mean life of an elementary particle pion is 2 x 10 hanosecond The age of the universe is about 4 x 10 years

Question

EXAMPLE 26 The mean life of an elementary particle pion is 2 x 10 hanosecond The age of the universe is about 4 x 10 years Identify a physically meaning time interval that is approxi mately half way between these two on a logarithmic scale

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