Abstract In 2011, the General Conference on Weights and Measures (CGPM) confirmed its
intention to adopt new definitions for four of the base units of the SI based on fixed numerical …

The redefinition of the SI unit of mass in terms of a fixed value of the Planck constant has
been made possible by the Kibble balance, previously known as the watt balance. Once the …

The magnet system is an essential component of the Kibble balance, a device that is used to
realize the unit of mass. It is the source of the magnetic flux, and its importance is captured in …

We present a summary of the Planck constant determinations using the NRC watt balance,
now referred to as the NRC Kibble balance. The summary includes a reanalysis of the four …

We have measured Planck's constant and have obtained a value of 6.626 070 34 (12)× 10−
34 J s. To our knowledge this measurement of h has the lowest uncertainty reported to date …

The Kibble balance is expected to become an important instrument in the near future for
realizing the unit of mass, the kilogram, in the revised international system of units (SI). The …

The joule balance experiment has been carried out at the National Institute of Metrology,
China (NIM) since 2007. By the end of 2013 the first generation of the joule balance (NIM-1) …

A novel design for the magnet system of a watt balance is presented. While primarily
intended for the watt balance being developed by MSL, this design could be used for other …

Although the so-called magnetic geometrical factor, Bl, of a Kibble balance does not appear
in the Kibble equations, it offers the precision link between electrical and mechanical …

The Planck constant h is one of the most significant constants in quantum physics. Recently,
the precision measurement of the value of h has been a hot issue due to its important role for …