Realising the new kilogram - A linear mechanism to for the next-generation Kibble balance - Charlie Jarvis
This year the kilogram will be redefined. Mass will no longer be related to a physical artefact but to a fixed value of the Planck constant. The National Physical Laboratory is developing the next-generation 'Kibble balance' for the realisation of mass post-redefinition. The balance will be a high-precision commercial instrument with an uncertainty of around one part in a billion, capable of defining the UK's mass scale. The focus of this research is the development of a novel linear guidance mechanism required for the balance.