On Sunday, July 12, 2020 at 5:56:21 PM UTC-6, Alan Grayson wrote: > > > > On Sunday, July 12, 2020 at 4:10:34 PM UTC-6, Lawrence Crowell wrote: >> >> 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 >> > > I don't believe EM waves can exist without charges and/or currents being > the source of the waves. Has anyone done an experiment to prove this is > possible? Same with gravitational waves existing without the physical > presence of mass/energy. IMO, in both cases, the results of the equations > are being misinterpreted. AG >
What those solutions tell us is that EM waves can travel in regions of space without charges and/or currents. They don't tell us that EM waves can arise, come into existence, in the absence of charges and/or currents. AG -- 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/33deb560-f3a4-4f33-93ad-59cea5cd1532o%40googlegroups.com.
