The scattering occurs most in shorter wavelengths meaning that since the light carries far more blue light than violet (since it is scattered), the sky appears blue. If the particle is bigger than the wavelength (such as dust particles), the light is scattered evenly, but primarily forward, and all of the colors in the visible spectrum are scattered equally in contrast with the previous two where blue was scattered more than longer wavelengths. If the particle is roughly equal in size to the wavelength (such as smoke particles), the scattering is less pronounced. If the particle is smaller than the wavelength (such as nitrogen and oxygen molecules), the light is scattered in all directions, known as Rayleigh Scattering which causes shadows on sunny days to have a cooler tone. These effects on the light will be determined by how big the particle is to the wavelength. While this radiation travels consistently through the imperfect vacuum of space, molecules will affect it such as when it passes through our atmosphere, scattering the light in random directions. The Sun releases radiation of varying wavelengths across the electromagnetic spectrum from longer wavelengths including radio, microwaves and infrared to our visible spectrum starting with red and moving through to violet (ROYGBIV) as well as shorter wavelengths including ultraviolet, x-rays, and gamma rays. When discussing light, what we see is only one section of the radiation emitted. There are actually three stages of dusk that occur at the end of the three phases of evening twilight: While dusk colloquially means the transition from day to night or even broadly as the evening twilight hours, it has a precise scientific definition related to the solar elevation level, or where the Sun is in the sky in relation to the horizon. The process occurs in reverse in the evening from day to civil to nautical to astronomical and finally to night. In the morning we transition from Night to Astronomical twilight to Nautical Twilight to Civil Twilight with a dawn starting each phase and a dusk ending each. These occur in the morning and the evening in three separate phases. In general, we have dawn, dusk, and twilight to indicate the times when the Sun enters a new phase, throughout the phase, and at the end of a phase respectively. Outside of sunrise and sunset, what are these moments of transition? However, the transition between the two is not instantaneous, meaning that we have times when the light from the Sun is fading or rising. The Sun provides us with light creating the dichotomy of light and day. As the Earth rotates around on its axis, the Sun appears to rise in the east and set in the west.
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