How Mirrors Work | A Moment of Science | PBS?

A mirror shows you what’s in front of it by bouncing light back to your eyes, just like a ball bounces off a wall.

Imagine you're playing with a ball and you kick it toward a smooth, flat wall. Instead of going through the wall, the ball bounces right back at you, that's how a mirror works, but with light instead of a ball.

When you look in a mirror, light from your face travels to the mirror. The mirror is made of a special surface called a reflective surface, which means it can catch and send the light back. That reflected light then goes into your eyes, and poof, you see yourself!

Like a Bouncer for Light

Think of a mirror like a super-fast bouncer who catches every light that comes near them and sends it right back to where it came from. The smoother the surface of the mirror, the better the bounce, which is why mirrors are so clear.

If you're standing in front of a mirror, it’s like having a friend behind the glass who can see what you’re doing and shows you exactly how you look!

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Examples

  1. A smooth, shiny surface like a mirror reflects light back to our eyes, making us see an image of ourselves.
  2. When you look into a mirror, the light from your face bounces off and returns to your eyes.
  3. Mirrors work because they have a flat, reflective surface that sends light straight back.

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Categories: Science · mirrors· light· reflection