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Rainbows are instantly recognizable when they appear: an arc of sunlight reflected off of water drops that spreads out that white light into all of its component colors. Typically, most of us experience rainbows as colorful arcs in the sky, occasionally joined by a second, fainter outer bow and/or any reflections in additional bodies of water. But the true, full shape of a rainbow is actually a full circle. Normally obscured by Earth's surface, a full rainbow can be seen under the right conditions.
https://bigthink.com/starts-with-a-...opular experience,spectrum circle can be seen.
https://bigthink.com/starts-with-a-...opular experience,spectrum circle can be seen.
