An upside down "rainbow" has been spotted in the sky above Essex. Rachel Sanders spotted the circumzenithal arc in Gosfield, ...

The prism bends different colours of light at different ... So when the sun is behind you and the rain in front of you, you see a rainbow of colours reflected back from inside the raindrops.

When light passes through certain objects—such as prisms, rain droplets, or a CD—the different wavelengths can be bent at different angles. This makes the colors separate, so we see them as the ...