Refraction When light rays reach an angulated surface of a different material, it causes the light rays to bend.
(light rays; reach; an angulated surface of a different material) (it; causes; the light rays to bend; T:When light rays reach an angulated surface of a different material) Context(it causes,List([79, 88))):(the light rays; to bend; )
it causes,List([79, 88))
light rays it the light rays
reach causes to bend
an angulated surface of a different material
the light rays to bend T:When light rays reach an angulated surface of a different material