why are not rainbows circular in shape? why aren't small rainbows formed around fountains circular in shape?

Asked by anchaka | 14th Nov, 2013, 12:21: PM

Expert Answer:

Rainbows are indeed circular in shape. The horizon blocks part of the rainbow and only an arc is seen. As one goes higher into the atmosphere a circular rainbow could be seen.
 
 
The fountains or waterfalls are of relatively small size, so they block only a part of the sunlight, and hence form only arcs of rainbow and not full circles.

Answered by Romal Bhansali | 18th Nov, 2013, 09:47: AM

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