Progress on accurate measurement of the Planck constant: Watt balance and counting atoms <xref ref-type="fn" rid="cpb141896fn1">*</xref>

Progress on accurate measurement of the Planck constant: Watt balance and counting atoms *

Li Shi-Song^a),^b),^†, Zhang Zhong-Hua^b),^‡, Zhao Wei^a), Li Zheng-Kun^b), Huang Song-Ling^a)

Fig. 12. The 5-kg monocrystal of the enriched material left and the plan to be manufactured right. [ 84 ]