18 Jan
2018
18 Jan
'18
7:03 p.m.
hi theo, been talking to the mathematician behind that paper on knots, he explained that the "null condition" is where the EM field is... zero, and that the E is perpendicular to M at all points. it's not the same thing as the "non-radiating condition" for which you have to take a fourier transform.
he sent a link to the above paper which he said may have some clues about non-radiating conditions.
l.