01 JAN 2012 by ideonexus

 How a Rainbow Works

If you want to see a rainbow you ' have to have the sun behind you when you look at a rainstorm. Each raindrop is more like a little ball than a prism, and light behaves differently when it Sits a ball from how it behaves when it hits a prism. The difference is that the far side of I raindrop acts as a tiny mirror. And that is /hy you need the sun behind you if you want 0 see a rainbow. The light from the sun turns somersault inside every raindrop and is reflected backwards and downwards, wh...
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A fantastic explanation of how sunlight reflects off of raindrops to form a rainbow, which would be a rain-circle if the ground didn't get in the way.

01 SEP 2011 by ideonexus

 Rainbow More Beautiful Through Science

Nor ever yet The melting rainbow's vernal-tinctur'd hues To me have shone so pleasing, as when first the hand of science pointed out the path In which the sun-beams gleaming from the west Fall on the watery cloud.
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Poet describes how his appreciation of the rainbow's hues are increased by knowing through science that they are created by sunbeams on watery clouds.