What is a full rainbow?

The lower the sun, the higher the top of the rainbow. If you could get up high enough, you’d see that some rainbows continue below the horizon seen from closer to sea-level. Mountain climbers sometimes see more of a full-circle rainbow, though even a high mountain isn’t high enough to show you the whole circle. read more

A rainbow is in fact a full circle of light. However, due to most people viewing a rainbow on the ground we only see a semi-circle or arc of the rainbow. read more

Mention rainbows and most people come up with “Over the Rainbow” from the Wizard of Oz movie or lucky pots of gold and leprechauns. Rainbows have long been associated with good fortune, but their meaning goes way beyond the lucky charms. read more