Chapter 5

2. having a surface that is curved or rounded outward.
5. having the property of transmitting rays of light through its substance
7. model of light, the angle that a straight line, ray of light, meeting a surface, makes with a normal to the surface at the point of meeting.
9. not transparent or translucent; impenetrable to light
10. curved like a segment of the interior of a circle or hollow sphere
12. an optical phenomenon, by which the image of some object appears displaced above, below, or to one side of its true position
13. mirror, a flat smooth mirror

1. a curved piece of transparent material, such as glass or plastic, that refracts light
2. to tend to meet in a point or line; incline toward each other, as lines that are not parallel.
3. permitting light to pass through but diffusing it
4. to move, lie, or extend in different directions from a common point
6. of refraction, the angle between a refracted ray and a line drawn normal to the interface between two media
8. of reflection, the principle that when a ray of light, radar pulse, or the like, is reflected from a smooth surface
11. the standard or the common type