A floating gate is used to transfer {HEAD ~ the charge} from the photodiode to {TAIL ~ a receptor area} 
to
A floating gate is used to transfer { HEAD ~ the charge } from the photodiode to { TAIL ~ a receptor area }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL