Optical illusions, rainbow

  • Rainbows can be created in the rain of a cloud or waterfall and depend on clear lines of sight between the observer and water, as well as the right angle of the sun in the atmosphere (for reasons that when probed, become more difficult to understand by a magnitude).
  • Halos and sundogs are rainbow’s skyborne relatives and don’t touch the visible far horizon because of the angle of the observation; they are formed on very fine ice particles as parts of upper-level clouds.
  • Be sure to also check out the rainbows in the Hawaii category!
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