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sodium-vapour lamp

n.
1.lamp in which an electric current passed through a tube of sodium vapor makes a yellow light

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  • Idiom of the Day

    filled to the brim
    to be filled up to the top edge (brim) of something
    The coffee cup was filled to the brim.



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    Physiology
    Discoverer/Inventor : albrecht von haller (switzerland)
    Year : 1757-66      .. More >>
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