Atima's+Physics'+Picture

This is a contrived photo. It is a picture of refraction. When the the pencil goes from one medium to another, the light is refracted since light travels slower in water than it does in air. It appears that the pencil is bent, but it is actually straight. This only works when the pencil is placed left or right from the center. The farther away from the center, the more refracted the image is.