Question: De Broglie developed Equation 5-2 initially for photons, assuming that they had a small but finite mass. His assumption was that RF waves with

De Broglie developed Equation 5-2 initially for photons, assuming that they had a small but finite mass. His assumption was that RF waves with λ = 30 m traveled at a speed of at least 99 percent of that of visible light with λ = 500 nm. Beginning with the relativistic expression hf = ϒmc², verify de Broglie’s calculation that the upper limit of the rest mass of a photon is 10^-44 g.

A P 5-2

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