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    Summary

    Description This spectrometer ionized the gas at extremely low pressure and measured the mass of the resulting ions. Molecules were identified by their molecular weight and by the molecular weights of their dissociation products. After the gas was introduced, the instrument proceeded automatically to produce a mass spectrum record.
    Date
    Source National Institute of Standards and Technology
    Author National Institute of Standards and Technology
    Permission
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    Public domain
    This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.
    Warning: this does not include Standard Reference Data, as per Standard Reference Data Act (P.L. 90-396; 15 U.S.C. 290-290f) which may be copyrighted by the NIST.

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    Licensing

    Public domain
    This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.
    Warning: this does not include Standard Reference Data, as per Standard Reference Data Act (P.L. 90-396; 15 U.S.C. 290-290f) which may be copyrighted by the NIST.

    العربية ∙ English ∙ 日本語 ∙ македонски ∙ Nederlands ∙ +/−

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    29 September 1948

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    Date/TimeThumbnailDimensionsUserComment
    current15:34, 11 March 2014Thumbnail for version as of 15:34, 11 March 20145,993 × 4,779 (23.85 MB)NISTResearchLibrary

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