Well, like the thread name says:
What causes us to see colours?
Not the biological reason of how it goes into our eyes, and our brains re-intrepret the data.
I mean, I know white light is a form of wave, which when diffracted, can seperate into other forms of electromagnetic radiation, with different wavelengths;
red having longer wavelengths than say, blue.
But what causes these wavelengths?
I'm doing a Chemistry lab right now; and want to go a little beyond;
Anyways, I'm frazzled for now; thanks for any replies.