Saturday, October 15, 2011

Rainbows

Today, I was mindful that after a rainy day, we sometimes see beautiful rainbows in the sky.  This happens when the sun's rays passes through water droplets. The ray of light is refracted as it enters the drop, reflected off the back of the drop, and then it is refracted again as it leaves the drop. The phenomenon of two rainbows happens when the light is reflected twice.

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