Light

• Luminous


  Giving of light, light resource
• Reflection


  When light bounces of an object
• Law of reflection


  When a ray of light reflects off a surface, the angle of incidence is equal to angle of the reflection
• Incident ray


  The ray pointing towards and striking the object
• Reflected ray


  The ray that bounces back from the object
• Normal


  The perpendicular line (vertical line) in a law of reflection
• Angle of incident


  The angle formed between the incident ray and normal line
• Angle of reflection


  The angle formed between the reflected ray and normal line
• Plane mirror


  Highly polished surface that reflects light in order to create an image
• Lateral inversion


  When the light erects an image but inverted
• Refractive index


  The measure of refraction: n=c/v
• Angle of incidence


  The angle formed between the incident ray and the normal line
• Incident ray


  A ray of light that is traveling towards a surface
• Normal line


  A line that is perpendicular (at a 90-degree angle) to the surface at a given point