[TCML] Toroid Shielding

["Phil Tuck" <phil@xxxxxxxxxxx>]

Hello,
How is the shielding that we know that the toroid provides to the top of the secondary actually achieved? Is it by creating a field that is able to 'push' the streamers away from the top part of the secondary ? 
The 'Green Monster' coil of Dave Rieben ( http://www.youtube.com/watch?v=H3pfStBx2qY ) which has a 12.5" sec and a 56" major x 12" minor diameter toroid, is a good example.
The streamers of that coil in particular, clearly have a pronounced curved quality to them on their ground strikes. Could this be a direct result of the extra shielding that his relatively wide [sec diameter X 4.5] toroid provides? They appear that initially they curve away from the top of the secondary before they continue on downwards to their strikes.

Phil
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