Saturday , May 15 2021

We changed the weight definition for 130 years from May the next physics calculation method



  1. Change weight definition for 130 years from May, the next physics calculation method Tokyo Shimbun
  2. Definition of "kilogram", revised physics constant for the first time in 130 years Nihon Keizai Shimbun
  3. 【Electronic version】 Definition of "kilogram", discuss change today Today after about 130 years Nikkan Kogyo Shimbun
  4. Full coverage


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