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martes, 17 de agosto de 2010

vocabulary#2

opaque: completely blocking light from passing through them.



transparent: letting all light through, so that object on the other side can be seen clearly.


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


polarization: allowing light vibrationsto pass through in only one directon.


refraction: the bending of  light rays as they pass from one substance to another
convex lens:a lens that curves outward (is thicker at the middle than at the edges) and brings light rays togethe


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



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