| http://www.w3.org/ns/prov#value | - We know from other experiments (e.g. Young???s double slit experiment when photons are fired one at a time and detected by photomultiplier) that the path a ???real??? photon of light goes on is influenced by all possible paths although most of the energy is transferred along paths at and near those having minimum action (where the phase factor is eiS ~ e~0 ~ 1), so that ???virtual photons??? or of
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