| A | B |
|---|
| photon | tiny particle of moving light energy |
| frequency | the number of light waves that pass a certain point during a given period of time |
| transparent | describes an object that transmits light, or allows light to pass through it |
| translucent | describes an object that lets some light waves pass through, but blocks others |
| refraction | the bending of light rays as they enter a new medium |
| amplitude | the height of a wave measured by the distance between the center of the wave and the crest or trough |
| colors | different frequencies of visible light; there are seven in the spectrum |
| light | energy that we can see and sometimes feel as heat |
| opaque | describes an object that reflects or absorbs all the light that strikes it |
| electromagnetic | type of wave that transfers electric energy and magnetic energy |
| transmit | passes light through |
| reflect | bounces light off |
| absorb | traps light |
| regular reflection | clear reflection |
| diffuse reflection | fuzzy reflection |
| image | a copy of an object formed by reflected or refracted light |
| focal point | the point where rays of light meet |
| concave | curves inward |
| convex | curves outward or bulges |
| plane | flat |
