Thanks, I've had a look.
I was wondering if in the hypothetical situation that we consider changing Planck's constant for a photon:
with the equation E=hv, we know that h=E/v, therefore by changing h to a larger value we would be either increasing the energy or decreasing the frequency of the photon, if this is true, then if we are increasing the energy of the photon would that mean we would also be increasing the mass of the photon, as energy and mass are interchangeable?
As well as this, does PC only apply to photons when considering it as the ratio of energy of the particle to frequency or could it apply to electrons as well?
many thanks and sorry if this is too many questions