Does light itself truly have an infinite lifetime?
Does light itself truly have an infinite lifetime?
bigthink.com Does light itself truly have an infinite lifetime?
In all the Universe, only a few particles are eternally stable. The photon, the quantum of light, has an infinite lifetime. Or does it?
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That was an enjoyable read. At the end I couldn't help thinking about Penrose' cyclic conformal cosmology, in that a universe with only massless photons, distance becomes meaningless.