On Saturday, July 11, 2020 at 11:00:18 PM UTC-5, Alan Grayson wrote: > > > Can EM waves exist if there are no charges and currents? If you affirm, > has this ever been observed? This result, if it is a result, is likely an > artifact of the mathematics which has no basis in physical reality. Anyway, > are you claiming that spacetime curvature can exist in the absence of > matter/energy? Is this what the EP says? AG >
Yes they do. A plane or spherical EM wave in a region of space without charges is an elementary solution to Maxwell's equations. LC -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/fd66e889-f0db-4ab8-8708-0b6d035106a8o%40googlegroups.com.
