How Does the Sky Color Blue?
The sky’s vibrant blue hue results from scattering of sunlight by Earth’s atmosphere, mostly composed of nitrogen and oxygen molecules smaller than wavelengths of light; they scatter blue light more effectively. Violet and red wavelengths tend to scatter less, thus leaving blue wavelengths for our eyes. Rayleigh Scattering Lord Rayleigh discovered in the 1800s that […]
How Does the Sky Color Blue? Read More »