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A halo basically is ring of light which surrounds an article. Halos are even referred to as icebows; they are optical phenomena which emerge close to or around the Sun or Moon, and at times close to other strong light sources like street lights.
There are various kinds of optical halos, but they are generally caused by ice crystals in cold cirrus clouds which are situated far above the ground in the greater troposphere. The meticulous shape and direction of the crystals is accountable for the sort of halo observed.
Light is reflected and refracted by the ice crystals and might divide into colours because of diffusion, like a rainbow. Generally in cold conditions optical halos are created by crystals near the earth's surface and are known as diamond dust.
There are various kinds of optical halos, but they are generally caused by ice crystals in cold cirrus clouds which are situated far above the ground in the greater troposphere. The meticulous shape and direction of the crystals is accountable for the sort of halo observed.
Light is reflected and refracted by the ice crystals and might divide into colours because of diffusion, like a rainbow. Generally in cold conditions optical halos are created by crystals near the earth's surface and are known as diamond dust.
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