shadow

Now You Know

A primary rainbow will always appear 42 degrees above the top of the shadow cast by your head when you turn your back directly toward the sun and atmospheric conditions are right. Your height makes no difference, because the rainbow you see is unique to you.

Source: Rainbow expert Raymond Lee of the United States Naval Academy (mathematics and science division) in Annapolis, Md.

(c) Copyright 2001. The Christian Science Monitor

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