The coil stays cooler than the core when it is heating thru induction due to less resistance in the coil so that is why I think the coil is darker/cooler
http://en.m.wikipedia.org/wiki/Induction_cooking In an induction cooker, a coil of copper wire is placed underneath the cooking pot . An alternating ..... In turn, most of the energy becomes heat in the high- resistance steel, while the driving coil stays cool. On Monday, October 13, 2014, H Veeder <[email protected]> wrote: > > > On Mon, Oct 13, 2014 at 6:51 PM, Alan Fletcher <[email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> >> >> Figure 6 : this is complicated by transmission, which may be happening in >> the visible range. (IF the helical shadows are indeed images or shadows of >> the coiuls. But I still think they represent different conduction zones of >> a ceramic holder, as in the March test). However, this has a broad peak >> near the center of the visible range, so the blue might be enhanced a >> little. >> >> >> > > > I find it odd the dark bands (a.k.a the "shadows") persist. I can > understand how differences in conduction > > play a role when the reactor first starts but in the long run shouldn't > the dark bands disappear? > > Harry >
