Episode Seven: What is refraction of light? And What’s reflection of light?

Refraction and reflection are two ways light can change direction when it meets something, like a wall or water.

Reflection is what happens when light bounces off a surface. Think of it like a ball hitting a wall and bouncing back to you. If you look in a mirror, that’s reflection at work. The light from your face hits the mirror and comes back to your eyes, that’s how you see yourself.

Refraction is when light bends as it moves from one material to another. Imagine walking into a swimming pool, your legs look funny because the water changes how the light travels. When light goes from air to water, it slows down and bends. That's why a straw in a glass of water looks bent, the light bends as it leaves the water and enters the air.

It’s like a car driving on a road that suddenly hits wet pavement, the car slows down and changes direction slightly. Light does the same thing when it moves from one material to another.