Light and Reflection Concepts

Absorption

• Light energy converted into heat by materials.

• Light energy reflected by surfaces.

• Light energy transmitted through materials.

• Light energy scattered in different directions.

Real Image

• Formed by intersecting light rays, can be projected.

• Always appears inverted and cannot be projected.

• Formed by diverging light rays, can be seen on a screen.

• Always appears upright and can be projected.

Light

• A form of energy traveling in straight lines.

• A type of sound wave.

• A form of matter that has mass.

• A color perceived by the human eye.

Transmission

• Light passing through a material with minimal absorption.

• Light being reflected off a surface.

• Light being absorbed by a material.

• Light being scattered in different directions.

Angle of Reflection

• Angle between reflected ray and normal line.

• Angle between incident ray and surface.

• Angle between two reflected rays.

• Angle between normal line and surface.

Focus

• Point where parallel rays converge after reflection.

• Point where parallel rays converge after reflection.

• Point where light rays are absorbed.

• Point where light rays are scattered.

Reflection

• Light bouncing off an object's surface.

• Light being absorbed by an object.

• Light passing through an object.

• Light scattering in different directions.

Principal Axis

• Imaginary line through the center of a mirror.

• The line that defines the angle of incidence.

• The line perpendicular to the surface of the mirror.

• The line that connects the focal point to the mirror surface.

Angle of Incidence

• Angle between incident ray and normal line.

• Angle between reflected ray and surface.

• Angle between two incident rays.

• Angle between the normal line and the surface.

Virtual Image

• Formed by extrapolated light rays, cannot be projected.

• Formed by converging light rays, can be projected.

• Always appears larger than the object.

• Can be captured on a screen.