RT @realscientists: Q: Why do primary & secondary rainbows have reversed colours?
A: Light takes different paths inside the raindrop-pr… twitter.com/i/web/status/7… #
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RT @realscientists: Q: Why do primary & secondary rainbows have reversed colours?
A: Light takes different paths inside the raindrop-pr… twitter.com/i/web/status/7… #