The light of the electromagnetic spectrum that we perceive with our naked eye. The wavelengths of light that we can see are between roughly 380 nanometers to 700 nanometers. Blue (shortest visible wavelength) light is preferably scattered by gases and particles in our atmosphere (see Rayleigh scattering) and this creates the blue sky that we perceive when looking away from the sun during daylight. When the sun is at its peak at noon, we see white light, since the light travels through the least amount of atmosphere, undergoing the least atmospheric scattering and therefore includes most of the visible wavelengths and therefore this mixture of light appears white. As the sun moves across the sky and the solar incident angle increases, the sunlight has to travel through more and more of the atmosphere--before it strikes our eyes at the surface of the earth--which causes increased scattering, again of blue light more than longer wavelengths. Mid-day, the sun will appear to be yellow and at sunset sunlight has to travel through the longest path of atmosphere scattering almost all blue, most green, and lots of yellow light, leaving mostly red sunlight to be seen by us. This means sunsets and sunrises often look reddish.