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