This value was close to the value of Planck’s contant (= 6 626 × 10–
34J s) determined in an entirely different context In this way, in 1916,
Millikan proved the validity of Einstein’s photoelectric equation, instead
of disproving it The successful explanation of photoelectric effect using the hypothesis
of light quanta and the experimental determination of values of h and f0,
in agreement with values obtained from other experiments, led to the
acceptance of Einstein’s picture of photoelectric effect