What does quantum physics tell us about the possibility of “EM nothingness,” in which there are no EM phenomena of any kind—no photons, no electrically charged objects, no EM energy or EM fields of any kind. In this case, the EM field throughout this region of space would be precisely zero, with no uncertainty. Such a situation would violate Heisenberg’s principle, according to which all fields must maintain at least a minimal degree of randomness. So the EM field must exist, and it must have at least a minimal, randomly varying energy everywhere.
