Exam Review Flashcards
What is the definition of ‘Angel of Reflection’?
The angle between the reflected ray and the normal.
What is the definition of ‘Angle of Incidence’?
The angle between the incident ray and the normal.
What is the definition of ‘Bioluminescence’?
The production of light in living organisms as the result of a chemical reaction with little or no heat.
What is the definition of ‘Apparent Depth’?
The depths that an object appears to be at, due to the refraction of light in a transparent medium.
What is a mirror?
Any polished surface reflecting an image
What is Myopia?
The inability of the eye to focus light from distant objects; near sighted ness
What does non-luminous mean?
It does not produce its own light
What is the normal?
The perpendicular line to a mirror surface
What does opaque mean?
Not transmitting any incident light; all incident light is either absorbed or reflected; objects behind the material cannot be seen at all
What is the optical centre
The point at the exact centre of the lens
What is phosphorescence
The process of production of light by the absorption of UV light resulting in the emission of visible light over an extended period of time.
What is the meaning of plane
Flat
What is the principal axis
The line through the centre of curvature to the midpoint of the mirror
What is the principal focus
The point on the principal axis of a lens where light rays parallel to the principal axis converge after refraction
What does Real image mean?
An image that can be seen on a screen as a result of light rays actually arriving at the image location
What is a reflected ray?
The ray that bounces off a reflective surface.
What does reflection mean?
The bouncing back of light from a surface.
What is Specular reflection?
The reflection of light off of a smooth surface.
