Double Rainbow, all the way
Wendy and I were in Boca Raton for a wedding, and, given how freezing it is in NYC these days, we wanted to take as much advantage of it as possible. So we went for a long, long walk along the beach, watching the sandpipers run along the waves, making up stories about the owners of the other footprints in the sand. It had been raining all morning, but that didn't stop us. As we finally reached the point where we realized how far we'd walked, and that we'd have to walk all the way back, it started to rain a bit more, even though the sun was out.
"Look!" Wendy said. A rainbow seemingly began to grow out of the ocean. "I've never seen one right on the horizon before!" (We are not oceanfaring people).
It grew fast enough that you could follow its progress with your eye, first one band, and then a second. while behind us was a fantastic sunset.
You'd better believe we started shouting "What does this MEAN?"
And that's why you always bring your camera with you. Regular ol' panorama, 13 frames with the Nikon 35mm f/1.4.