The Joule Balance in Progress

Zhonghua Zhang,Qing He,Zhengkun Li,Bing Han,Yunfeng Lu,Jiang Lan,Shisong Li,YunFeng Fu

CPEM Digest (Conference on Precision Electromagnetic Measurements)（2012）

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摘要

The Joule Balance method, for the same purpose but different from the Watt Balance method, is going on at NIM for several years. The first measurement result of the Planck constant h is 6.6261(5)×10 -34Js with a measurement uncertainty of 7.7 × 10 -5. The further plan for improvement is discussed. © 2012 IEEE.

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关键词

Joule Balance,mutual inductance,the Planck constant h,uncertainty,Watt Balance

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