Context: QED vacuum has interesting and complex properties. In QED vacuum, the electric and magnetic fields have zero average values, but their variances are not zero. As a result, QED vacuum contains vacuum fluctuations (virtual particles that hop into and out of existence), and a finite energy called vacuum energy. Vacuum fluctuations are an essential and ubiquitous part of quantum field theory. Some experimentally verified effects of vacuum fluctuations include spontaneous emission and the Lamb shift. Coulomb's law and the electric potential in vacuum near an electric charge are modified.

Question: When are electric and magnetic fields with zero average values, but their variances are not at zero?
Answer: In QED vacuum

Question: What is a verified effect of vacuum fluctuation?
Answer: spontaneous emission

Question: what is  vacuum fluctuation?
Answer: virtual particles that hop into and out of existence

Question: Finite energy in a QED is called what?
Answer: vacuum energy

Question: What modifies can Coulomb's Law in a vacuum?
Answer: vacuum near an electric charge

Question: What part of quantum field theory are electric and magnetic fields?
Answer: Unanswerable

Question: What kind of properties does Coulomb's law have?
Answer: Unanswerable

Question: What values does vacuum energy have under Coulomb's law?
Answer: Unanswerable

Question: What are the variances of vacuum energy according to Coulomb's law?
Answer: Unanswerable

Question: What do particles defined in Colombo's law do?
Answer: Unanswerable