Here's a breakdown:
* Light travels at different speeds in different materials. For example, light travels faster in air than in water.
* When light passes from one medium to another, its direction changes. This change in direction is called refraction.
* The amount of bending depends on the angle at which the light hits the boundary between the two media and the difference in the speed of light in the two media. This is why a straw in a glass of water appears to be bent.
Refraction is a fundamental concept in optics and plays a crucial role in many applications, such as lenses, prisms, and fiber optics.
