In: Physics
Imagine, you are taking a prism to split the sunlight into it's spectrum of colors. You further place a thermometer or temperature probe into each of the three resulting color areas blue, yellow, and red (see schematic).
Which thermometer do you expect to show the highest temperature and why?
Now imagine additionally that you take a fourth thermometer and place it in the area just outside/beyond the red region of your visible spectrum. How would you expect the temperature reading to compare to the other three and why?