Reflection and Refraction in Physics
Reflection and refraction are two important phenomena in physics that involve the interaction of light with various surfaces. Let's delve into each of these concepts in detail.

Reflection:
- Reflection occurs when light rays bounce off a surface.
- The angle of incidence (the angle at which the light ray approaches the surface) is equal to the angle of reflection (the angle at which the light ray bounces off the surface).
- The law of reflection states that the incident ray, the reflected ray, and the normal (a line perpendicular to the surface at the point of incidence) all lie in the same plane.

Refraction:
- Refraction occurs when light rays pass from one medium to another and change direction.
- The change in direction is due to the change in speed of light as it passes through different mediums.
- The amount of refraction is determined by the refractive index of the mediums involved.
- Snell's Law describes the relationship between the angles of incidence and refraction: n1sinθ1 = n2sinθ2, where n1 and n2 are the refractive indices of the two mediums, and θ1 and θ2 are the angles of incidence and refraction, respectively.
In conclusion, reflection and refraction are fundamental concepts in physics that help us understand how light behaves when interacting with different surfaces and mediums. These phenomena have wide-ranging applications in various fields such as optics, photography, and telecommunications.