Why is the sky blue simple answer?
Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.
- The sunlit sky is blue because air scatters short-wavelength light more than longer wavelengths. Since blue light is at the short-wavelength end of the visible spectrum, it is more strongly scattered in the atmosphere than long-wavelength red light.
- Scattering is a general physical process where some forms of radiation, such as light, sound, or moving particles, are forced to deviate from a straight trajectory by one or more paths due to localized non-uniformities in the medium through which they pass.
- The first steps towards correctly explaining the colour of the sky were taken by John Tyndall in 1859. He discovered that when light passes through a clear fluid holding small particles in suspension, the shorter blue wavelengths are scattered more strongly than the red.
Noun. blue-sky thinking (uncountable) (idiomatic) Thinking that is not grounded or in touch in the realities of the present. (idiomatic) Open-minded thinking.
- Blue Sky Laws are state regulations established as safeguards for investors against securities fraud. The laws, which may vary by state, typically require sellers of new issues to register their offerings and provide financial details.
- The Uniform Securities Act (USA) is a model statute designed to guide each state in drafting its state securities law. It was created by the National Conference of Commissioners on Uniform State Laws (NCCUSL). The state security laws are often known as blue sky laws.
- Soon after that she had a little daughter, who was as white as snow, and as red as blood, and her hair was as black as ebony, and she was therefore called little Snow White. And when the child was born, the queen died.
Updated: 2nd October 2019