The main rainbow, the brighter one in the photo above, is known as the primary ... You may not know that a rainbow is presented in a full circle. The "bow" is the portion that people usually ...

To see the full circle, however, you will have to be in an airplane, literally above the clouds. Or you could create your own rainbow. I am a physicist, and I’ll explain how to do that in a minute.

If you were high up in a plane, or up a mountain, you would see a rainbow as a full circle. The next time it is a sunny day you can even create your own rainbow! If you use a water spray or hose ...