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I think they specifically meant x-rays, rather than blue light; the x-rays would require more energy, so their explanation makes sense to me.
by conistonwater 11y ago
I think they specifically meant x-rays, rather than blue light; the x-rays would require more energy, so their explanation makes sense to me.
- danbruc 11y agoYou are right, if you are after x-rays specifically this might not work. But I can't see x-rays so I am happy with some blue light.