How did you measure the temperature of the painted material? The saw on this previously (just one yourube video) measured the temperature by using a an infrared

How did you measure the temperature of the painted material? The saw on this previously (just one yourube video) measured the temperature by using a an infrared temperature device. Which is not the same as the actual surface temperature. The temperature is inferred from the amount of infrared light detected, and the assumed emissivity of the surface. So when the the author concluded that the paint lowered the temperature of the surface by only measuring it with an infrared thermometer, it seemed a flawed conclusion to me. He had only shown that less infrared was emitted than other nearby surfaces, not that the temperature was lower.