Hello, everyone, Now that the new method of defining the kilogram (using the Kibble balance) has been accepted by the BIPM it is now necessary for the precise value of the kilogram to be used throughout the scientific metrology community.
An article on this subject <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1088%2F1681-7575%2Fabef9f&data=04%7C01%7Cusma%40lists.colostate.edu%7Cc110665cb47e47afba7308d90837e784%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C1%7C637549858472361708%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=OaWFvtZfF6ZUkNccZz1DV1rtvS%2FYnJNg17a52kFqVLI%3D&reserved=0> has been published in the Metrologia section of the IOP Publishing website and may be downloaded free of charge. The abstract is as follows: Metrologia Letter to the Editor • The following article is Open access Beginning of a new phase of the dissemination of the kilogram S Davidson and M Stock <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Forcid.org%2F0000-0002-9282-7421&data=04%7C01%7Cusma%40lists.colostate.edu%7Cc110665cb47e47afba7308d90837e784%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C1%7C637549858472361708%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=oYdJ2wFiLtrevbsG%2FGUFMpKtbwDeg48iVe0ZfiMF4CE%3D&reserved=0> Published 12 April 2021 • © 2021 BIPM & IOP Publishing Ltd Abstract Following the completion of the first key comparison of realizations of the kilogram, CCM.M-K8.2019, the internationally coordinated dissemination of the kilogram has entered into a new phase on 1 February 2021. The traceability of the mass unit to the Planck constant will now be taken from the 'consensus value' of the kilogram. This letter provides the background on the phases of the dissemination of the kilogram and describes the determination of the consensus value and its consequences for mass traceability. This news was posted to Reddit’s metric forum, along with some links relevant to the article, by a Redditor named V_Straya and may be viewed here, <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.reddit.com%2Fr%2FMetric%2Fcomments%2Fmy4uw4%2Fbeginning_of_a_new_phase_of_the_dissemination_of%2F&data=04%7C01%7Cusma%40lists.colostate.edu%7Cc110665cb47e47afba7308d90837e784%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C1%7C637549858472361708%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=%2Fa4Jtq1YcYAv%2BwtdurwbCBKF8MtehNocKrnbu3Jn5Ts%3D&reserved=0> along with any comments. Best wishes, Peter Goodyear, Melbourne, Australia e-mail: [email protected]
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