Assertion: photon's charge | /r/CapableOf | travel in time
Facets:
value: backwards
type: MANNER
Source sentences:
text: U(1) deals with just 1 type of charge: negative charge, i.e., it ignores positive charge which is treated as a negative charge travelling backwards in time, Feynman’s fatally flawed model of a positron or anti-electron, and with solitary particles (which don’t actually exist since particles always are produced and annihilated as pairs).