| A | B |
|---|
| opaque | a material that only absorbs and reflects light |
| transluscent | a material that transmits some light |
| transparent | a material that transmits almost all light |
| transmit | to allow energy to pass through |
| emit | to create or give off energy |
| index of refraction | a property of a material that indicates how much it will slow down light |
| mirage | an image of a distant object made to appear closer due to different air densities |
| pigment | a colored material that is used to change the color of other substances |
| coherent light | light with identical wavelengths in which the crests and troughs line up |
| incoherent light | light with multiple different wavelenghts |
| polarized ligt | light traveling in only one direction |
| holography | a technique using lasers to create a 3D image known as a hologram |
| total internal reflection | when light tries to leave one medium to go to another but can't, and ends up bouncing back and forth in the original medium |
