Here's why it happens:
* Speed of light: Light travels at different speeds in different materials. For example, it travels slower in water than in air.
* Change in direction: When light transitions from one medium to another, its speed changes. This change in speed causes the light to change direction, bending at the interface between the materials.
Factors Affecting Refraction:
* Angle of incidence: The angle at which light strikes the surface of the new material affects the degree of bending.
* Indices of refraction: Each material has a unique index of refraction, which represents how much the speed of light slows down in that material. The greater the difference in indices of refraction between the two materials, the more the light will bend.
Examples of Refraction:
* A straw in a glass of water appears bent at the water's surface.
* A rainbow is formed by the refraction of sunlight through water droplets in the air.
* Lenses in cameras, telescopes, and eyeglasses use refraction to focus light.
Let me know if you have any other questions!
