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electron microscope

n.
1.a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light

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    Idiom of the Day

    run around in circles
    to act confused, to do a lot but accomplish little
    I have been running around in circles all day but I cannot seem to get anything done.



    1.
    It's ________ film.

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    My Account / Test History
    Invention
    Invention : flashlight, battery-operated portable
    Year : 1899
    Inventor : conrad hubert
    Country : russia/us.      .. More >>
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