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    Article

    The conception of photons - Part I

    In the year 1900, Max Planck was led by experimental observations to propose a strange formula for the intensity as a function of frequency for light emitted by a cavity made in a hot substance such as a metal...

    Urjit A. Yajnik in Resonance (2015)

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    Article

    The conception of photons–Part II

    In this second part of the article, we present how S N Bose’s 1924 paper provided a systematic derivation of Planck’s formula using the conception of photons, filling the major lacuna that was preventing the a...

    Urjit A. Yajnik in Resonance (2016)