@VigilantFox Pie in the sky idea vs technical know-how are very different things. This is why it’s important to finish school and make sure your idea doesn’t violate fundamental ideas.
@CNN Makes sense: from your high school physics class where a black body emitter EM radiation in the infrared, but absorbs EM radiation lower on the EM spectrum. Most IR thermometer measure IR and may not be calibrated for folks with a darker skin tone, especially inexpensive ones.