2 ms·
It's more like not having a deficiency in perceiving the full spectrum of colours; or having a difference in spectrum deficiency. If you can't see red, then I'
by dleslie 6y ago
It's more like not having a deficiency in perceiving the full spectrum of colours; or having a difference in spectrum deficiency.
If you can't see red, then I'm going to have a tough time explaining red to you.