> It isn't good enough to see what's going on when it's actually pitch black, which it is most of the time at night.
You mean in a thunderstorm, maybe? Or a fog bank?
On a clear night, even with no moon, humans can see quite well. Since rod vision is used, it is difficult to do fine work (reading, sewing, soldering, ....), but just walking around outside is no problem.
If you want to see the night for yourself, try spending a few nights camping out somewhere away from artificial lighting. Don’t bring along any of those terrible “white” LED flashlights – they completely clobber night vision. It takes about a half hour for eyes to fully adapt to the dark.
You mean in a thunderstorm, maybe? Or a fog bank?
On a clear night, even with no moon, humans can see quite well. Since rod vision is used, it is difficult to do fine work (reading, sewing, soldering, ....), but just walking around outside is no problem.
If you want to see the night for yourself, try spending a few nights camping out somewhere away from artificial lighting. Don’t bring along any of those terrible “white” LED flashlights – they completely clobber night vision. It takes about a half hour for eyes to fully adapt to the dark.