Fog bow

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A fog bow is a similar phenomenon to a rainbow, however, as the name suggests, it appears in the fog rather than rain. Because water droplets in the fog are significantly smaller than in rain, the fog bow produces less colour - it can be slightly reddish on the top and bluish on the inside, or completely white. In addition to the fog bow, the rime frost can be seen on the guard rails on the left of the picture. The rime frost is created when supercooled water droplets moving with the air mass hit a vertical surface and immediately freeze, building up in time, always on the windward side.