Is the sky blue because of reflection of light or refraction of light??
srjh is correct. Here’s a detailed explanation: The technically correct answer is that the blue light is scattered by the air molecules in the atmosphere (referred to as Rayleigh scattering). The blue wavelength is scattered more, because the scatteing effect increases with the inverse of the fourth power of the incident wavelength. OK, but I’ve known science graduates who don’t understand what this means. Here’s my attempt at an answer without too much physics: I think most people know that sunlight is made up of light of several different wavelengths, and can be split up into the colours of the rainbow. Blue light has the shorter wavelength, and red the longest wavelength. When sunlight hits the molecules in the atmosphere, the light is absorbed; causing the molecules vibrate and and give off, or ‘re-emit’ the light. Because the molecules vibrate in all directions, the light is emitted in all directions (called ‘scattering’). Because the blue wavelength is shorter and more energetic,
