Thermistor for measuring/controlling temperature

All about thermistors for measuring and controlling temperature, including how to use the thermistor that’s in an automobile coolant temperature sensor. I talk about the difference between Positive Temperature Coefficient (PTC) thermistors and Negative Temperature Coefficient (NTC) thermistors. I talk briefly about my experiment to test if cold water boils faster than hot water and then talk about the effect of the thermistor’s changing resistance on the electrical current running through a PC fan, to turn the fan on and off. I go over the electrical circuit for it in detail, including the homemade power supply, thermistor, PC fan and wiring.