A mirror doesn’t actually know anything, it just follows the rules of light. When you look at a mirror, your eyes send out light that bounces off your face and hits the mirror. The mirror sends that same light back, so you see yourself. It’s like when you throw a ball at a wall, the wall doesn’t know where the ball came from, but it sends it back anyway.
How Light Works
Light is like little balls that bounce around everywhere. When these light balls hit something, they can reflect off of it. A mirror is really good at reflecting light, better than most things. So when you stand in front of a mirror, the light from your face reflects back to your eyes, and poof! You see yourself.
Why It Works for Everything
A mirror doesn’t care if it’s seeing your face or your cat or your favorite toy, all it does is reflect what hits it. That’s why you can see anything in front of a mirror, as long as there’s light.
Examples
- Your face is like a flashlight, it sends out light that hits the mirror and bounces back to your eyes.
- A cat sitting in front of the mirror doesn't know what it looks like, the mirror just reflects it without thinking.
- Even when you hold up a toy, the mirror doesn’t ‘know’ what it’s reflecting, it just shows you the toy.
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See also
- How Do Mirrors Work?
- How Do Mirrors Reflect Images?
- What Causes the ‘Shine’ of a Wet Pavement?
- What Causes the ‘Shine’ on a Wet Street?
- How Does a Mirror ‘Know’ What It’s Reflecting?
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