martes, 28 de septiembre de 2010

Vocabulary 2

opaque:completely blocking light from passing through.



transparent: letting all right throught,so than objects on the other side can be seen clearly.

translucent: letting only some light throught, so that objects on the other side appear blurry. 


polarization: allowing light vibrations to pass throught in only one direction.

refraction: the bending of light rays as they pass from one substance into another.


convex lens: a lens that curves outward (is thicker at the middle than at the edges) and brings-


concave lens: a lens that curves inward (is thicker at the edges than at the middle) and spreads light rays apart.







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