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 viewed from an airplane or a very high vantage point, a whole circle of a rainbow is possible to be seen under proper conditions. If such an obstacle as the horizon does not shut the view ...

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 ...