| A | B |
| illuminated | word used to describe and object that can be seen because it reflects light |
| luminous | word used to describe an object that can be seen because it emits light |
| spectroscope | an instrument used to view the different colors of light produced by differnt light sources |
| incandescent light | light bulb that glows when a filament inside it gets white hot |
| tungsten-halogen bulb | incandescent light bulb containing a tungsten filament and a halogen gas |
| fluorescent light | light bulb that glows when an electric current causes ultraviolet rays to strike a coating inside a tube |
| vapor light | light bulb containing neon or argon gas along with a small amount of solid sodium or mercury |
| neon light | glass tube containing neon gas that produces light |