Rainbow

This magnificent 'special effect' is the result of sunlight being scattered into the different colours of the spectrum as it enters and then emerges from the millions of water droplets within a rain shower. To see a rainbow, the sun needs to be behind you, with the rain ahead of you. The lower the sun is in the sky, the more of the semicircle of the rainbow you will see. So rainbows are best observed at the beginning or end of the day, and during the winter months of the year.