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refraction

n.
1.the change in direction of a propagating wave (light or sound) when passing from one medium to another
2.the amount by which a propagating wave is bent

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    Idiom of the Day

    shaken up
    to be bothered or disturbed
    I was shaken up after I heard about the fire at our apartment building.



    1.
    Things went badly with the project, but he took it in his ________ and didn't get upset.

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