FIG 5 illustrates {HEAD ~ the magnetic lines} of {TAIL ~ force} on a device constructed according to principles of the invention 
of
FIG 5 illustrates { HEAD ~ the magnetic lines } of { TAIL ~ force } on a device constructed according to principles of the invention
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH