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## Main Question or Discussion Point

When a photon, with the help of a nucleus experiences pair production to make a positron and an electron, the energy of the photon will equal the rest mass of both the electron and positron together right?

Then when the electron and positron annihilate, the two photons produces will each have energy equal to the rest mass of a positron/electron.

The new photons will have half the energy of the original photon each.

Is this correct?

Then when the electron and positron annihilate, the two photons produces will each have energy equal to the rest mass of a positron/electron.

The new photons will have half the energy of the original photon each.

Is this correct?