Where do you have refraction?

Answer 1

Observing the diameter of a straw in a tall (clear) glass of water is great demonstration of refraction.

A partly-filled glass of water that is placed on a sunny window sill will show a rainbow when the sunlight hits it just right.

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Answer #2:

I encounter it every morning when I put my glasses on.

Answer 2

it is where an objects light 'path' changes direction as it slows down or speeds up. it slows down when it is going through a solid as it has to make its way through a smaller space :)

Answer 3

In rooms where a light is on.