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brightness constancy

n.
1.the tendency for a visual object to be perceived as having the same brightness under widely different conditions of illumination

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Word of the Day

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    Idiom of the Day

    sweep out of (somewhere)
    to leave somewhere in a dramatic way
    The actress swept out of the room when her performance finished.



    1.
    I am convinced you are ________ right to take that action and should ignore any opposition.

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