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Chapter 11 PHYSICS - Part 2
N/A
16
Physics
10th Grade
06/18/2013

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Term
Laws of reflection
Definition
1. Angle of incidence equals the angle of reflection.
2. The incident ray, the reflected ray, and the normal all lie in the same plane.
Term
Specular Reflection
Definition
Reflection of light off a smooth surface. (ie. still water, flat piece of aluminum foil, disco mirror ball)
Term
Diffuse Reflection
Definition
Reflection of light off an irregular or dull surface
Term
*Note : Dyslexia
Definition
Contrast of white paper and black text makes reading difficult.
Term
Virtual Image
Definition
An image formed by light coming from an apparent light source; light is not arriving at or coming from the actual image location.
Term
Two observations about a plane mirror:
Definition
1. Distance from object and mirror is exactly the same distance from image to mirror.
2. The object-image line is perpendicular to mirror surface.
Term
SALT
Definition
S. Size of image (same size, smaller, larger)
A. Attitude (upright or inverted)
L. Location of image.
T. Type of image (real or virtual)
Term
Concave (converging) mirror
Definition
A mirror shaped like part of the surface of a sphere in which the inner surface is reflective
Term
Convex (diverging) mirror
Definition
A mirror shaped like part of the surface of a sphere in which the outer surface is reflective.
Term
Centre of curvature
Definition
The centre of the sphere whose surface has been used to make the mirror
Term
Principal axis
Definition
The line through the centre of curvature to the midpoint of the mirror
Term
Vertex
Definition
The point where the principal axis meets the mirror.
Term
Converge
Definition
To meet at a common point.
Term
Focus
Definition
The point at which light rays parallel to the principal axis converge when they are reflected off a concave mirror.
Term
Real Image
Definition
An image that can be seen on a screen as a result of light rays actually arriving at the image location.
Term
Diverge
Definition
To spread apart. (;
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