Light : Mirror and Lenses

• mirror - a smooth reflecting surface usually made of polished metals or glass that has been coated with metalic substances
• 2 types of mirrors are plane mirror and curved mirror.
• Reflection - it's the bouncing off of light rays when it hits a surface like a plane mirror.
• Incident ray - the ray of light approaching the mirror represented by an arrow pointing towards from the mirror.
• Reflected ray - the ray of light which leaves the mirror and is represented by an arrow pointing away from the mirror
• Normal line - an imaginary line labeled N, that can be drown perpendicular
• Specular / Regular reflection: The reflection of light from a smooth surface.
• Diffused / Irregular reflection - reflection of light on rough surfaces such as clothing, paper, and wavy water.
• Curved mirror - a reflecting surface in which it is a section of sphere.
• 2 types of curved mirrors are convex and concave mirrors
• Concave mirror - it is a curved mirror in which the reflective surfaces bulges away from the light source.
• Convex mirror - a curved mirror in which the reflective surface bulges towards the light source
• Concave mirror is also called converging mirror because the parallel incidents rays converge or meet at a focal point after reflection