Here's why it happens:
* Light travels at different speeds in different mediums. For example, light travels slower in water than it does in air.
* When light enters a new medium at an angle, one side of the wave front slows down before the other. This causes the wave front to bend, resulting in a change of direction.
Key Concepts:
* Angle of Incidence: The angle at which light strikes the surface of the new medium.
* Angle of Refraction: The angle at which light bends as it enters the new medium.
* Index of Refraction: A measure of how much light slows down in a particular medium. A higher index of refraction means light slows down more.
Examples of Refraction:
* Seeing a straw in a glass of water appear bent: The light from the straw travels through water and then through air, causing it to bend.
* Rainbows: Sunlight is refracted through raindrops, separating the colors of the spectrum.
* Lenses: Concave and convex lenses use refraction to focus or disperse light.
Let me know if you'd like to explore any of these concepts in more detail!
