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Light
| Term | Definition |
|---|---|
| medium | the material through which light travels |
| reflect (reflection) | occurs when light bounces off an object. |
| refract (refraction) | the bending of light as it passes from one medium to another medium. (Like light passing from air to water.) |
| transmit | the passing of light through a medium |
| absorb | light is "taken in" by the medium. |
| lens | curved piece of glass or plastic that bends light. |