The first material may be {TAIL ~ a copper or copper alloy} having {HEAD ~ a lower resistivity} compared to the second material, which may be manganin 
The first material may be { TAIL ~ a copper or copper alloy } having { HEAD ~ a lower resistivity } compared to the second material , which may be manganin
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH