It can stop you in your tracks if you spot it — a rare upside-down rainbow! This kind of rainbow formation is called a circumzenithal arc (CZA), and technically, it isn't even a rainbow at all ...

Meteorologist Brandon Weatherz explains what conditions must fall into place in order for a rainbow to form.

Rainbows may be a trick of the eye, but they’re also based in fascinating optical physics. Here's how they work and why we see them.

Scientists have understood the basics of rainbow formation since at least Descartes' time: Sunlight interacts with water droplets in the sky, and the light is both reflected and refracted as it ...

So what exactly is a rainbow, anyway? Rainbow formation explainer - Baron/The Weather Network ...

If you can’t conceptualize that, don’t worry, neither can I. Suffice it to say that Rainbow Springs is the fourth-largest spring formation in Florida and a first magnitude spring.