The shadow is an opaque figure
Transaparent:letting all light through ,so that objects on the other side can be seen clearly
Glasse is an a example of transparent
translucent: letting only some light through , sothat objects on the other side appeare blurry
some paper is an example of translucent
Polarization :allowing light vibrations to pass trough in only one direction
Polarization work in electronic waves
Refraction: the bending of light rise as the pass from one substance into another.
an glass with water is an example of refraction
Convex lens: a lens that curves outward (is thicker at the middle than at the edge ) and brings light rays together
Concave lens: a lens that curves inward( is thicker at the edges than at th middle) and spreads light rays appart
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