| A | B |
|---|
| focal length | the distance from the center of the lens or surface of a mirror to its focal point. |
| covex | A mirror that is curved outward like the bottom of a spoon. |
| fiber optics | The technology based on teh use of laser light to send signals through transparent wires. |
| pupil | The circular opening that controls how much light enters the eye. |
| image | A picture of an object formed by rays of light. |
| lens | An optical tool for refracting light. |
| optics | The study of visible light and of the interaction of light with the eye to produce vision. |
| cornea | The transparent membrane light enters the eye through. |
| focal point | The point at which a mirror or lens focus the parallel light rays. |
| law of reflection | The angle of reflection equals the angle of incidence |
| laser | A device that produces an intense, concentrated beam of light. |
| diffuse reflection | The reflection of light rays in many different direction. |
| retina | The part of the eye that contains specialized cells that respond to light |
| concave | A mirror that curved inward toward the center. |
| regular reflection | The reflection of parallel light rays all in the same direction. |
