Look more closely, though, and it’s easy to tell the difference. What is crystal? Crystal is a type of glass made with lead oxide. This slight chemical difference gives crystal ...

We can separate white light into all its different colours using a glass prism. The prism bends different ... and the rain in front of you, you see a rainbow of colours reflected back from inside ...

Have you ever seen a rainbow in the sky? Rainbows happen when sunlight passes through raindrops in the sky. When this happens, light becomes separated into a rainbow of colors—red, orange ...