00:01
So we know that some materials, when uv light is on them, they will fluoresce or seem to glow.
00:09
Will this happen with other types of light, like infrared, for example? so if we shine infrared light on a material, this will not make it glow.
00:20
Why will it not glow? well, if we look at the energy spectrum, we'll do just a line here.
00:28
Now we have on this end, we're going to say this is our low energy end, and this is our high energy.
00:36
End.
00:39
Now if we look at these two on this spectrum, we'll do infrared in red.
00:44
So infrared is going to be closer to the low energy side, while your uv light, which is going to be blue, is closer to the high energy side...