Timeline for If Earth's atmosphere is technically violet but our eyes can't see it, is there a possible variable that can let us perceive that?
Current License: CC BY-SA 4.0
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| Oct 5, 2022 at 8:07 | comment | added | Zizy Archer | Well we see purple as red+blue. Extending vision towards 300nm would have you see something purplish as a pure color. Increasing number of blue receptors would almost surely extend vision in that corner of CIE chart, making it easier to distinguish shades of blue, teal, purple and whatnot. I don't think there is any need to improve vision in red to see purple better - red receptors are reasonably good already. | |
| Oct 5, 2022 at 0:55 | comment | added | RonJohn | "you simply state they see blue and purple much better than we do". Purple is "red + blue", so you're just seeing blue and red better. | |
| Oct 4, 2022 at 8:08 | history | answered | Zizy Archer | CC BY-SA 4.0 |