Since 1889 the international prototype of the kilogram has served as the definition of the unit
of mass in the International System of Units (SI). It is the last material artefact to define a …

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 …

Abstract The National Institute of Metrology (NIM, China) proposed a joule balance method
to measure the Planck constant in 2006, and built the first prototype NIM-1 to verify its …

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) …

质量单位千克是国际单位制7 个基本单位中惟一一个仍以实物定义和复现的基本单位.
作为一种实物, 其量值必然会因为环境因素及使用时的磨损而发生变化. 但由于缺少更高一级的 …

In the joule balance developed at National Institute of Metrology, the dynamic phase of a
watt balance is replaced by the mutual inductance measurement in an attempt to provide an …

Abstract; The National Institute of Metrology (NIM) has been studying the Joule Balance
method (which is used for the same purpose as the Watt Balance method but operated …

The development of the joule balance method to measure the Planck constant, in support of
the redefinition of the kilogram, has been going on at the National Institute of Metrology of …

Seit dem 20. Mai 2019 gilt das neue Internationale Einheitensystem SI. Dies stellt eine Zäsur
in der Geschichte der Einheiten dar, denn von nun an sind alle 7 Basiseinheiten durch …

To make contribution for the redefinition of the kilogram with the Planck constant, the
National Institute of Metrology (NIM, China), proposed a joule balance method. The first …