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... n, arranged the light source, placed a prism, and positioned a white board on the other side of the prism—a classic dispersion experiment. Then, on both sides outside the spectrum, he placed a thermometer and squatted down to scratch his chin:
How to prove ultraviolet light?
The proof of infrared light is simple; beyond the red light area, the thermometer heats up significantly, thus proving the existence of infrared. But what about ultraviolet light? The thermometer in the ultra ...
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