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19.2 Chemistry
Vocabulary Words
| Question | Answer |
|---|---|
| index of refraction | the ratio of the speed of light in a vacuum to the speed of light in a medium |
| lens | an object made of transparent material that has one or two curved surfaces that can refract light |
| concave lens | a lens that is curved inward at the cent and is thickest at the outside edges |
| convex lens | a lens that is curved outward at the center and is thinnest at the outside edges |
| critical angle | the angle of incidence that produces an angle of refraction of 90 degrees |
| total internal reflection | the complete reflection of a light ray back into its original medium |