A black rainbow is a real thing; it appears where water drops reflect light away from the viewer. : r/Damnthatsinteresting

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Rainbow on (behind) the horizon. Origin is behind the curve : r

Color and Vision

Free AstroScience - This is what happens when a rainbow falls

Technology is a Tool, Not a Learning Outcome - Ed&Tech Monthly Blog

internal consistency - How to make sure humans do not know the

Exploration into the Physics of Rainbows

Just a single a single atom trapped between electrical fields. : r

2:00PM Water Cooler 9/7/2021