response: I can't say, but ever hear of the Rayleigh scattering? It's what causes the red sky during sunset.
original_response: The red sky at sunset results from Rayleigh scattering which is important part of physics today.
history: red is one of the best colors Interesting, is it because its on the end of the visible light spectrum? yes, and really plainly it is pretty awesome, and does have meaning behind it I'm not aware of the meanings, yet I know that during the Renaissance, the rich and nobles had brilliant red costumes dyed with kermes as well as cochineal. I wonder if there is a significant meaning today?
knowledge: The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide.