| A | B |
| Chemical Reaction | Atoms re-arranged to form new substance. |
| Cone Cells | Photoreceptors in retina that respond to color. |
| Cyan | Greenish, light-blue created when red is absorbed and blue and green reflected. |
| Electromagnetic Spectrum | The whole range of light. |
| Fluorescent | Type of electric bulb; highly efficient. |
| Incandescence | The process of making light with heat. |
| Magenta | Pink-purple color created when green absorbed and red and blue are reflected. |
| Nanometers | Equal to one billionth of a meter. |
| Photoluminescence | Occurs when light energy makes something else give off light. |
| Pixel | Dot on computer screen whose color changes depending on the 3 numbers your computer assigns to it. |
| Polarizer | Partially transparent material that lets through only one polarization of light. |
| Rod Cells | Photoreceptor cells in retina that respond to differences in brightness. |
| Subtractive Primary Colors | Magenta, yellow and cyan. |
| Terahertz | Unit of measurement equal to one billionth of a second. |
| Visible Light | Light you can see. |
| Yellow | Color created when blue absorbed and red and green are reflected. |