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My question is simple: Are there any massless
My question is simple: Are there any massless particles?
Because I've now found out that the photon, which I always thought to be massless, actually has an extremely small amount of mass. It is something along the lines of a billionth of a billionth of an eV. Anyway, now I'm wondering whether there are any actual and true massless particles.
Thanks,
Al
My question is simple: Are there any massless particles?
Because I've now found out that the photon, which I always thought to be massless, actually has an extremely small amount of mass. It is something along the lines of a billionth of a billionth of an eV. Anyway, now I'm wondering whether there are any actual and true massless particles.
Thanks,
Al