On rare occasions rays of light are reflected three times within a rain drop and a triple rainbow is produced. There have only been five scientific reports of triple rainbows in 250 years ...

And after the rain left, rainbows were seen across the valley just before sunset. Earlier Friday, up to three-quarters of an inch of rain fell in the northeast valley. A gauge at the Sloan channel ...

Rainbows are one of nature’s most enchanting phenomena, painting the sky with vibrant arcs of 7 colours after a rain shower ... Thus we see only the top half of the circle and are led to ...