A New Proposal to Redefine Kilogram by Measuring the Planck Constant Based on Inertial Mass
A novel method to measure the Planck constant based on inertial mass is proposed here, which is distinguished from the conventional Kibble balance experiment which is based on the gravitational mass. The kilogram unit is linked to the Planck constant by calculating the difference of the parameters, i.e. resistance, voltage, velocity and time, which is measured in a two-mode experiment, unloaded mass mode and the loaded mass mode. In principle, all parameters measured in this experiment can reach a high accuracy, as that in Kibble balance experiment. This method has an advantage that some systematic error can be eliminated in difference calculation of measurements. In addition, this method is insensitive to air buoyancy and the alignment work in this experiment is easy. At last, the initial design of the apparatus is presented.
KeywordsPlanck constant Redefine the kilogram unit Inertial mass
This work is supported by National Natural Science Foundation of China (Grant Nos. 61575056 and 91536224), China National Key Research and Development Plan (Grant No. 2016YFF0200102), Aeronautical Science Foundation of China (Grant No. 2012ZA77001) and Natural Science Foundation of Heilongjiang Province (Grant No. F2016012).
The authors would like to thank Mr. Zhengkun LI from National Institute of Metrology of China for valuable advice on this work.
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