Hi there, my favorite color is blue!
Same here! What shade of blue do you like most?
Hmm, I think azure is my favorite, which contains some green in it. Do you have a favorite?
I think sky blue looks so good!
Definitely. The clear daytime sky and the color of the deep sea appear the way that they are because of an optical effect known as Rayleigh scattering.
I had no idea! Any idea how that illusion works?
I believe it has to do with the elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of radiation. It occurs through transparent liquids/solids.
Hmm that's really interesting!
Indeed it is. Blue is such an interesting color, another effect which deals with blue is called Tyndall scattering, which explains blue eyes in humans!
So much science behind something so simple!