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Top: Kids_and_Teens: School_Time: Science: The_Earth: The_Atmosphere: Optical_Effects
This category is for optical phenomenon that occur in the atmosphere such as rainbows and sun dogs.
Green flashes are optical effects that occur around sunset or sunrise, when a green spot is visible above the sun.
Mirages are an illusion often associated with water, and is caused by distortion of light by alternate layers of hot and cool air.
A sun dog is an atmospheric optical phenomenon caused by reflection and refraction of sunlight by ice crystals that make up cirrus clouds.When attempting to look at sun dog, do not look directly at the sun.
Sun pillars occur around sunrise and sunset when there are ice crystals in the air. It makes it look like there is a pillar of light leading from the Sun to the Earth.Do not look directly at the sun.
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