heat flow sensor
Used to measure the flow and direction of heat through clothing or building materials. It contains countless thermistors and unlike a temperature sensor, provides readings as Watts/m2. While its classroom uses seem limited, this is an interesting sensor that provides a useful measurement. It might be compared with sensors that compare two temperatures and measure the difference but wins every time. These will probably by superseded by newer infrared technology. Either way it’s a tool I’d want to take home to check out my house. My heat flow sensor rating *** / +
I’ve rated these sensors but your assessment will be different. I give * to **** for the sensor’s intrigue, interest, and learning potential. I give from + to ++++ for how often a science department might use it.