Is a glowing LED useful for accurate determination of Plank's constant?
Abstract
Plank's constant is a fundamental constant in Physical sciences and Millikan received Noble prize for obtaining it experimentally in 1923. As the technology of solid state electronic devices developed, an experiment was designed and adapted to determine the Plank's constant using LED. Herrmann and Sch\"atzle questioned the validity of this experiment on the basis of the diode equation and their approach was further discussed by Morehouse. In this article, the validity of this experiment is revisited.
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