For {HEAD ~ a range} of {TAIL ~ voltages}, the ratio of the current to voltage is a constant, which for a typical thermistor may be about one ohm 
For { HEAD ~ a range } of { TAIL ~ voltages } , the ratio of the current to voltage is a constant , which for a typical thermistor may be about one ohm
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH