The electromagnetic spectrum is a rainbow of light waves that surround us — but we only see a small part of it. From radio waves to gamma rays, each type of light has its own properties and uses. By ...

There are three primary colours of light, which can be combined to make secondary colours. A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow ...

The different colours of light that we get from the sun What happens when light hits a raindrop Why rainbows are arch-shaped How you can create your own rainbow This resource is suitable for ...

This process, known as dispersion, separates white light into its component colors, which we perceive as a band of colors in the sky. The Visible Spectrum The colors of the rainbow, often ...

A regular rainbow happens when sunlight is refracted through water droplets, usually rain drops, splitting the light into the spectrum of colours. By Matt Taylor, BBC Weather Double rainbows ...