Assertion: electron's energy | /r/HasProperty | 2 × 511 kev
Facets:
Source sentences:
text: Gamma photons of enough energy (2 × 511 keV) can produce an electron-positron pair (provided they are near nuclei at the time: don’t emphasize this point.)
text: Gamma photons of enough energy (2 × 511 keV) can produce an electron-positron pair (provided they are near nuclei at the time: don’t emphasize this point.)