(Searched and although this has been asked before I still can’t find an answer that makes much sense to me)
So how does a photon come into existence, and how can it instantly be travelling at C? I turn on a light bulb and photons are instantly created and travelling at C…but created from what, exactly? The light bulb filament is in a vacuum, but every time I turn on the light bulb new photons are simply created out of nothing (with no “fuel” to draw from)?
I guess I’m struggling to understand how heating the filament results in billions (?) of photons in a constant stream travelling at C, when a millisecond earlier there was just an inert metal thread in a vacuum.
In: Physics
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