{TAIL ~ The apparatus} 16, further including {HEAD ~ a permanent magnet} to create a fixed magnetic flux field 
{ TAIL ~ The apparatus } 16 , further including { HEAD ~ a permanent magnet } to create a fixed magnetic flux field
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH