Assertion: photon | /r/CapableOf | produce an electron-positron pair
Facets:
Source sentences:
text: You can read the left diagram as: an electron emits a photon which is then absorbed by a positron (or vice versa), momentum being conserved in each step; and the right diagram as: an electron and a positron annihilate, then the photon produces an electron-positron pair.