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That is why I said "actual white".
by neltnerb 6y ago
That is why I said "actual white".
- btilly 6y agoSo "actual white" has little to do with the color that we see. Is it also white to the x-ray spectrum and the radio wave spectrum? If so, I am pretty sure that this doesn't actually exist.
- neltnerb 6y agoRight, it doesn't actually exist. It is a technical definition that by definition absorbs no light, it isn't a practically realizable thing.
- retrac 6y agoYes, you're describing a white body, the opposite of an ideal black body. It does not exist, of course. But we can try to approximate one with materials, at least for IR through UV. Now, if we do have a pigment that can reflect X-rays... I'd definitely want my roof painted with that.
- Dylan16807 6y ago> x-ray Easy to ignore since it won't be hit by any. > radio I dunno, how hard is it to get materials that reflect radio waves? It's probably reasonable to talk about materials that reflect almost all the light in frequency bands of non-negligible power as effectively being actual white.