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Mirrors and Lenses
| Term | Definition |
|---|---|
| lens | a transparent object that refracts light waves such that they converge or diverge to create an image |
| real image | an image that is formed by the intersection of light rays: a real image can be projected on a screen |
| concave | curved or rounded inward like the inside of a spoon |
| converge | to come together; a converging lens or mirror causes parallel beams of light to come together at a single point |
| cornea | a transparent membrane that covers the iris and pupil of the eye; much of the eye’s refraction occurs as light passes |
| diverge | to move apart; a diverging lens or mirror causes parallel beams of light to spread apart as if they came from a single point |
| reflection | he bounding back of a ray of light, sound, or heat when the ray hits a surface that it does not go through |
| refraction | the bending of a wave front as the wave front passes between two substances in which the speed of the wave differs |
| virtual image | an image from which light rays appear to diverge even though they are not actually focused there, a virtual image cannot be projected on a screen |
| retina | the light-sensitive inner layer of the eye, which receives images formed by the lens and transmits them through the optic nerve to the brain |
| scattering | describes matter that transmits light but that does not transmit an image |
| convex | curved or rounded outward like the back of a spoon |
Created by:
kdominick