Refraction and Distortion.

A refracted shape is created when light passes through something transparent, such as water or glass, and bends. This bending light creates an optical effect, which gives us the refracted shape. The 'classic' example of refracted light is the prism. Light shines into the prism and, because of the shape of the prism, bends. The prism slows the light down enough that it shows the entire spectrum of colours. Shining a direct light into a faceted piece of glass or crystal will produce this effect. 

Distortion happens to any image behind a glass object when it is viewed through the glass. It becomes warped and almost abstract in appearance. If you add water to a glass container, objects behind the container will distort dramatically. 

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