What causes a rainbow to appear after it rains?
Rainbow's Secret Recipe
What causes a rainbow to appear after it rains?
The storm packs up and leaves. And right as the last drops fall, a giant arc of color stretches across the sky, like the sky decided to show off. Where did it come from? The secret is hiding inside the raindrops.
Here's the first surprise. Sunlight looks plain and white, but it's secretly a bundle of every color at once — red, orange, yellow, green, blue, all riding along together, perfectly disguised as nothing-in-particular.
