<p><br> A rainbow stretches over a section of the 670-mile-long (1,100-kilometer-long) Denali Highway in Alaska. Rainbows are a simple, ordered display of visible light reflected off of water droplets in the atmosphere.</p>

Denali Highway, Alaska


A rainbow stretches over a section of the 670-mile-long (1,100-kilometer-long) Denali Highway in Alaska. Rainbows are a simple, ordered display of visible light reflected off of water droplets in the atmosphere.

Photograph by Rich Reid

Patterns in Nature: Rainbows

See photos of rainbows, from National Geographic.

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