Like a ball that can be both a ball *and* a wave
Imagine you have a bouncy ball. When it's bouncing up and down on the floor, it looks like a particle, something solid you can touch. That’s like how light acts when it hits things, like your eyes or a wall.
But if you shake that same ball really fast in a bowl of water, it makes ripples. Those ripples spread out like a wave. Light does this too, it spreads out and bends around corners, just like waves in the water.
Sometimes light is one thing, sometimes it's the other
Light can be both a particle and a wave, depending on what you're looking at. It’s like having a super-smart friend who can be there with you and be far away at the same time, it just depends on how you play the game! Light has two faces, just like you when you're playing hide and seek, one moment you're hiding, the next you're found!
Like a ball that can be both a ball *and* a wave
Imagine you have a bouncy ball. When it's bouncing up and down on the floor, it looks like a particle, something solid you can touch. That’s like how light acts when it hits things, like your eyes or a wall.
But if you shake that same ball really fast in a bowl of water, it makes ripples. Those ripples spread out like a wave. Light does this too, it spreads out and bends around corners, just like waves in the water.
Examples
- When scientists shoot tiny particles at a screen, sometimes they act like waves and create patterns, other times like balls.
- Imagine throwing a ball into water, it makes ripples (like a wave), but you can also track where it lands (like a particle).
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See also
- What are the fundamental principles of quantum physics?
- How Can a Single Electron Make You See the World?
- How Do Lighthouses Work?
- Episode Seven: What is refraction of light? And What’s reflection of light?
- How does a hologram work? (in 1 minute)?