A student is thus able to study magnetic fields, electromagnetic forces, and their interaction through {HEAD ~ use} of {TAIL ~ this device} 
of
A student is thus able to study magnetic fields , electromagnetic forces , and their interaction through { HEAD ~ use } of { TAIL ~ this device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL