When the heat sink is removed from the computer, the heat pipe is engaged with the heat source to transfer {HEAD ~ heat} generated by {TAIL ~ the heat source} to the heat sink, which is external to the computer 
When the heat sink is removed from the computer , the heat pipe is engaged with the heat source to transfer { HEAD ~ heat } generated by { TAIL ~ the heat source } to the heat sink , which is external to the computer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH