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optical pyrometer

n.
1.a pyrometer that uses the color of the light emitted by a hot object

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    Idiom of the Day

    come as no surprise
    to not be surprising
    It came as no surprise that the government decided to have an election.



    1.
    She asked us if we ________ finished the work on Monday.

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    My Account / Test History
    Element
    Element : selenium
    Symbol : se
    Atomic no. : 34
    Melting Point (deg c) : 220.5
    Boiling Point (deg c) : 685
    Discoverer : berzelius (1817)      .. More >>
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