A laser pointer is like a flashlight that only shines in one direction. When you point it at a wall, the light comes out as a straight line and bounces around, just like how sunlight lights up your room when you open the window. It's not magic; it's just tiny particles of light called photons, all going in the same path.
Examples
- Even though it starts small, it lights up the whole room because of how light spreads out
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