1) Atmospheric optical phenomena
Found on
https://www.crosswordclues.com/clue/dewbow
A dewbow is an optical effect, similar to a rainbow where the dewdrops reflect and disperse sunlight, producing all the colours in the visible spectrum. ==Occurrence== Although rare, dewbows are most common in autumn, when dewdrops form on a dense network of spiderwebs (or rarely on walls, grasses and other vegetation), where the dew hanging on th...
Found on
http://en.wikipedia.org/wiki/Dewbow
No exact match found.
