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