Light

Reflection

The bouncing of light off a surface.

Primary colors of light

The set of primary colors of light is red, green, and blue.

Ray diagrams

Diagrams illustrating the behavior of light rays, including incident ray, reflected ray, normal, angle of incidence, and angle of reflection.

Mirrors

Surfaces that reflect light and form images, with characteristics such as same size image, upright image, lateral inversion, virtual image, and equal object and image distances.

Laws of reflection

Rules governing the reflection of light, including the incident ray, reflected ray, and normal lying in the same plane, and the angle of incidence being equal to the angle of reflection.

Applications of plane mirrors

Uses of plane mirrors like periscopes and ammeter/voltmeter.

Regular reflection

Reflection of light on a smooth surface where the angles of incidence and reflection are the same, forming a clear image.

Diffused reflection

Reflection of light on a rough surface where the angles of incidence and reflection vary, resulting in an unclear image.

Refraction of light

The bending of light as it passes from one medium to another of different optical density.

Refractive index

The ratio of the speed of light in vacuum to the speed of light in a medium, indicating how much a material can slow down light.

Dispersion of light

The separation of white light into its constituent colors when passing through a medium.

Application of light

Uses of different types of light like infrared for thermal imaging, visible light for photosynthesis, and ultraviolet for disinfection.