
Perception is individual and relative to previous experience.
( , Mon 30 Jul 2018, 15:18, Reply)

Colour is light of different wavelengths. Hubble can detect different wavelengths. It processes that information. It can see colours.
( , Mon 30 Jul 2018, 15:23, Reply)

The function of our cones varies.
I think we've been left arguing on the same side.
( , Mon 30 Jul 2018, 15:59, Reply)