2 (References to relative positions of answers are not reliable as they depend on the view (votes/newest/active) and changing of the accepted answer and change over time (for votes, active, and accepted state)).
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One thing that the previous answers above are missing -- the light is accelerated,accelerated; it just is accelerated according to the rules of special relativity, which says that it cannot pick up speed when already travelling at the speed of light. Instead

Instead, it gains kinetic energy the way a photon gains kinetic energy -- by being blueshifted to a higher frequency, which does translate to more energy, according to the Planck relation $E = h\nu$.

One thing that the answers above are missing -- the light is accelerated, it just is accelerated according to the rules of special relativity, which says that it cannot pick up speed when already travelling at the speed of light. Instead, it gains kinetic energy the way a photon gains kinetic energy -- by being blueshifted to a higher frequency, which does translate to more energy, according to the Planck relation $E = h\nu$

One thing that the previous answers are missing -- the light is accelerated; it just is accelerated according to the rules of special relativity, which says that it cannot pick up speed when already travelling at the speed of light.

Instead, it gains kinetic energy the way a photon gains kinetic energy -- by being blueshifted to a higher frequency, which does translate to more energy, according to the Planck relation $E = h\nu$.

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One thing that the answers above are missing -- the light is accelerated, it just is accelerated according to the rules of special relativity, which says that it cannot pick up speed when already travelling at the speed of light. Instead, it gains kinetic energy the way a photon gains kinetic energy -- by being blueshifted to a higher frequency, which does translate to more energy, according to the Planck relation $E = h\nu$