What Causes ‘Rainbows’ and Why Are They So Pretty?

Rainbows happen when water droplets and sunlight play a fun game together in the sky.

Imagine you're walking through a puddle after a rainstorm, and your friend is shining a flashlight on you from behind. The water on your face acts like tiny mirrors, and they bend the light into different colors, just like how a prism splits white light into rainbow colors!

When sunlight hits a water droplet, it slows down and bends, this is called refraction. It's like when you stick your arm in a pool, and it looks bent because water changes how light moves.

Then the light bounces off the inside of the droplet and bends again as it leaves, kind of like bouncing a ball off a wall, but with light!

Each color bends just a little differently, so they separate out. Red is on one end, violet on the other, like mixing paint, but with light!

Rainbows look so pretty because each color is spread out in a perfect arc, it's like a colorful smile from the sky! And since you need just the right angle between the sun, water droplets, and your eyes, rainbows feel special. They're not magic, they’re nature’s favorite light show!