LOUIS – The sky is ... The color of clouds involved several optical processes: Mie scattering, Rayleigh scattering, and refraction. The sunlight is going through the water droplets that act ...

Have you ever gazed up on a clear day, marvelling at the vast expanse of blue overhead, and wondered why the sky isn't, say, green or red? This seemingly simple question delves into the ...

light-hued color called sky blue. Sky blue isn't a new color for Apple. It's the featured shade of the current M4 MacBook Air, a shimmer of cerulean so subtle as to almost be missed. It's silver ...