Rainbow Rainbow mist or bleached Due to refraction and reflection within the sprinkler in the fog can be seen easily when they noticed on the mountain and look down to the Valley with the fog. When the Sun is behind the back, observations of people's observations on the lower level near the horizon.
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Rainbow mist or colorless rainbow Caused by refraction and reflection inside the pipeline spray mist. Are easily seen when the observer is on a mountain and looking down into the valley fog. As the sun behind the observer after observer's low near the horizon.