The bending of light as it moves from one material to another is called refraction.

Here's a breakdown:

* Light travels at different speeds in different materials. For example, light travels faster in air than it does in water.

* When light enters a new material, it changes direction. This change in direction is caused by the change in speed.

* The amount of bending depends on the angle at which the light enters the new material and the difference in speed of light between the two materials.

Here are some examples of refraction in everyday life:

* Seeing a straw in a glass of water appear bent.

* Rainbows forming when sunlight passes through water droplets.

* The lenses in eyeglasses and cameras bending light to focus it.

Let me know if you'd like to explore any of these concepts in more detail!