OK, thanks. That's what it sounded like but his description was low on the details so I figured I wouldn't make that stretch. Anyway, yes, my guess was mostly b

OK, thanks. That's what it sounded like but his description was low on the details so I figured I wouldn't make that stretch. Anyway, yes, my guess was mostly based on Maxwell and a little vector calc (physics minor, nothing more) but it seemed to make sense.