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Title: An Introduction To Mass Metrology In Vacuum
Author: Patrick J. Abbott Zeina J. Jabbour
Source: 2011 Measurement Science Conference
Year Published: 2011
Abstract: Mass metrology carried out in atmospheric pressure air is suitable for most every critical application. However, mass metrology in vacuum is important in several current research projects. Performing mass measurements in a vacuum environment eliminates the need for air buoyancy corrections and hence allows a more precise determination of true mass. In addition, the major experiments for redefining the kilogram in terms of a physical constant of nature, the watt balance and the Avogadro project, both operate in vacuum. A kilogram that is redefined by these experiments will require making the transfer from mass in vacuum to mass in air

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