| A | B |
|---|
| Opaque | Material that absorbs or reflects all light and does not transmit any light |
| Translucent | Material that transmits some light but not enough to see objects clearly through it |
| Transparent | Material that transmits almost all the light striking it so that objects can be clearly seen through |
| Mirage | Image of a distant object produced by the refraction of light through air layers of different densities |
| pigment | Colored material that is used to change the color of other substances |
| Incandescent light | Light produced by heating a piece of metal, usually tungsten, until it glows |
| Fluorescent Light | Light that results when ultraviolet radiation produced inside a fluorescent bulb causes the phosphor coating inside the bulb glow |
| Coherent Light | Light of a single wavelength that travels in a single direction with its crests and troughs aligned |
| Incoherent Light | Light that contains more than one wavelength, and travels in many directions with its crests and trough unaligned. |
| Polarized Light | Light whose waves vibrate in only one direction |
| Holography | Technique that produces a complete three dimensional photographic image of an object |
