Why does a road look wet on a hot day?
Sky's Road Trick
Why does a road look wet on a hot day?
You're riding in the car on a scorching summer day, and there it is up ahead — a shimmering puddle stretched across the road. But as you get closer, the puddle vanishes like a magic trick. What's going on?
Here's the secret: that "puddle" is actually the sky. You're seeing the blue sky reflected on the road, and your brain mistakes it for water because water also reflects the sky. It's an optical illusion called a mirage.
