Each of the magnet and magnetic piece has an associated magnetic flux density; {HEAD ~ the magnetic flux density} generated by the magnet is larger than {TAIL ~ the saturation flux density} around the magnetic piece 
is larger than
Each of the magnet and magnetic piece has an associated magnetic flux density ; { HEAD ~ the magnetic flux density } generated by the magnet is larger than { TAIL ~ the saturation flux density } around the magnetic piece
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH