Originally Posted by noelex 77
Nice theory, but I am afraid totally wrong. Dark adaption is mostly to do with retinal adaptation. The pupil changes size, but has to trade
off aberrations so the size change only makes a small contribution to dark adaption.
I think I also remember reading that even though red has a lesser effect, it also takes a proportionately higher intensity of red for us to make out details with it. So, in the end, the different colors makes no difference because the intensity required for each color ends up evening it out.
IF the compass
is constructed out of materials where only the letters and markings reflect UV light, I think it would work. You should be dealing with a high-contrast situation, so the intensity should be able to be very low.
BUT, the red theory sounded good for many years until research
finally got around to disproving it. Our UV theory could follow a similar road...