Rainbows are formed when light is refracted, or bent, as it passes through water droplets in the air. When sunlight enters a water droplet, it is refracted, or bent, and separated into its component colors. This is because different colors of light have different wavelengths, and they are refracted at slightly different angles. As the light exits the water droplet, it is refracted again and the colors are separated further. The result is a spectrum of colors that we see as a rainbow. A double rainbow occurs when light is reflected twice inside a raindrop before exiting. This causes the colors of the second rainbow to be reversed from the first. The inner rainbow is brighter, and the outer rainbow is fainter. We see rainbows when we are positioned between the sun and the raindrops, with the sun behind us and the rain in front of us.