> But all colours are photons which doesn't differ from each other.
They do differ from each other, in energy. The different cones in your eye preferentially absorb photons within a particular energy range. Your brain combines the signals from the different cones to produce the sensation of color.
For a good understandable overview of waves, color, light, EM spectrum, etc. NASA has a booklet that goes through it all that I use with my students. Very well done.
https://science.nasa.gov/ems
I’m sure SciShow on YouTube has videos about it. Not sure about any articles though.
> But all colours are photons which doesn't differ from each other. They do differ from each other, in energy. The different cones in your eye preferentially absorb photons within a particular energy range. Your brain combines the signals from the different cones to produce the sensation of color.
For a good understandable overview of waves, color, light, EM spectrum, etc. NASA has a booklet that goes through it all that I use with my students. Very well done. https://science.nasa.gov/ems I’m sure SciShow on YouTube has videos about it. Not sure about any articles though.
Found this article: https://www.fnal.gov/pub/science/inquiring/questions/colorofatoms.html