It's the difference between photopic (light-adapted) and scotopic (dark-adapted) vision. You can see the tables here.Hey guys not to threadjack but my question is somewhat related. Max visible spectrum is something like 556nm but I read a post from Greenlander informing that that is the max visible spectrum for daylight while darkness has a different max visible spectrum. Does anyone know what the max visible spectrum in darkness is?
I know 375nm diodes exist along with 400nm diodes. Both are very expensive for a few mW's. If you have the cash though, you can probably get them in 100mW's+ powersHere's a question about the nearly invisible spectrum, but in the other direction, is 405nm the shortest wavelength we can currently obtain reasonably priced laser diodes with a few hundred mw or more of power output? Are there any diodes in the 300-400nm range? I can't seem to find any, light emitting diodes yes, laser diodes no.