Obviously we’re all now very familiar with the double rainbow phenomenon. What’s the most simultaneous rainbows on record?



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    If you only count rainbows visible to the naked eye under natural conditions, then the most simultaneous rainbows is four. If you count experiments done as part of scientific research, then P.H. Ng, M. Y. Tse, and W.K. Lee formed rainbows up to the 200th order using a 50mW argon ion laser beam and a pendant water drop in 1998.

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