Do you understand Thermocouples?
Control Engineering Editor Peter Welander demonstrates the concept and use of thermocouples, including one made from scrapbox components. (10 minutes). I think this is a lot cooler than the TV ads for Sprint mobile that Dan Hesse makes (in MHO).
Way to go, Peter!
To learn more about thermocouples visit About Temperatures.com’s Thermocouple pages at: www.temperatures.com/sensors/csensors/thermocouples-tcs/