Why do people see mountains in the distance blue?

Although purple light is the light with the shortest wavelength, blue light is the light that people see most when looking away from the mountains.

The human eye detects blue more easily.

The sky is often blue during the day thanks to atmospheric distortion and the limitation of human vision. That is a phenomenon called Rayleigh scattering.

Specifically, the sun emits white light because they blend all the colors of the rainbow including red, orange, yellow, green, blue, indigo, and violet.

All of those colors travel in their separate wavelengths. Red light has the longest wavelength and violet light has the shortest.

Sunlight takes an average of 8 minutes and 20 seconds to reach the Earth. Light with shorter wavelengths is more likely to hit air molecules and scatter around, bumping from molecule to molecule until the light reaches our eyes from any direction. which is possible.

As a result, the violet wavelength will travel to the human eye faster. However, blue light is one of the shortest wavelengths in the entire visible light spectrum because the sun initially emits less violet light than blue light, and thus the human eye detects color. blue easier.

In short, the scattering of a lot of blue light in the atmosphere, combined with an unequal amount of blue light from the sun and the limitation of our view, is what makes mountains so far away. green Blue.