# A conjecture on mass of photon

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I proposed a conjecture that mass of photon:

$m_{photon}=h/c^2=0,73725.10^-50$ [kg] $=0.4132567. 10^{-14}$ [eV/c^2]

Is the conjecture true or false, why?

Thanks

asked Nov 11, 2020

In order to speak of photon mass, one has to have the natural dynamic equations that use it. But there is none. Your mass may not appear anywhere in practice.

From the numbers it would appear that $h$ is Planck's constant. It has units $Js$ or $eVs$. So $h/c^2$ cannot have units $kg$ or $eV/c^2$.

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