my reasoning: the actual colors we can see -> the wavelengths that we can extrapolate to -> basically extrapolated wavelengths plus an ‘unpure-ness’ factor -> not even real wavelengths (ok well king blue and maybe lavender if I’m being generous could be)

  • AdrianTheFrog@lemmy.worldOPEnglish
    1·
    23 days ago

    yea I know thats why I called it a slippery slope, because if you know for certain that there’s only one wavelength in the scene then you could tell its cyan, but if it could be any spectrum then you would have no idea

      • AdrianTheFrog@lemmy.worldOPEnglish
        1·
        22 days ago

        IDK, I can’t tell from looking at the 2015 CIE CMFs (I think these are the most accurate? also I used the firefox plugin “unpaywall” to see them as sci-hub wasn’t working) if there are any completely identifiable red colors or not. I initially assumed there were, but I guess I don’t really know (I had assumed any perceived color could be made from a standard red green and blue, but now I also don’t know if that’s true).

        edit: if that assumption is true than there would be no way to produce photons of different wavelengths in a way that looks like a fully saturated red

        also the falloff at the end of the spectrum might mess with that a little, it looks like there is a continuously varying ratio of red to green along the end of the spectrum, but I can’t really tell

        edit2: it also varies somewhat with age and among individuals apparently, so that might complicate things further