In particular, the current flow at {TAIL ~ any point} 15 can vary in {HEAD ~ proportion} to the stress at that point 
In particular , the current flow at { TAIL ~ any point } 15 can vary in { HEAD ~ proportion } to the stress at that point
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH