Published on 12, July, 2020
Do you have any to share with the forum? It could make for an enlightening thread.
I've posted about this before. Colour and light is one of my lifelong interests. I find the idea of being tetracromatic fascinating.
https://en.wikipedia.org/wiki/Tetrachromacy
Thanks mate. That's pretty interesting. I guess this thread is a bit like the facts thread but with more articles.