研究目的
To present a novel method for the primary realization of the redefined unit of mass, kilogram, by accurately relating the Planck constant to spheres manufactured from natural silicon.
研究成果
The 'quasi-primary' realization of the kilogram using spheres made of natural silicon offers a robust and more affordable alternative to the primary realization with 28Si spheres, suitable for dissemination of the kilogram after the revision of the SI. The new hydrostatic comparator, combining the Archimedes principle with a magnetic suspension coupling, is key to achieving the desired measurement uncertainty.
研究不足
The method is slightly less accurate than the primary realization using 28Si spheres and requires the development of a custom-made hydrostatic comparator with a magnetic suspension coupling.
