From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "J-P. Rosen" Newsgroups: comp.lang.ada Subject: Re: SI units updated Date: Wed, 3 Oct 2018 07:48:43 +0200 Organization: Adalog Message-ID: References: <4b58915a-1e25-4470-bf6b-6de7ff8e5fb6@googlegroups.com> <0646c57a-4be2-402f-b55c-bb684433eb8a@googlegroups.com> <8e0c1dc6-7098-473a-b811-3d7d0f87fff1@googlegroups.com> NNTP-Posting-Host: TKk5kT01+2w6guVcOjcsiQ.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Openpgp: preference=signencrypt Content-Language: fr X-Notice: Filtered by postfilter v. 0.8.3 Xref: reader02.eternal-september.org comp.lang.ada:54473 Date: 2018-10-03T07:48:43+02:00 List-Id: Le 02/10/2018 à 23:43, Shark8 a écrit : > Interesting; though I'm not sure what advantage that [using Planck's Constant] would have. FWIW: the Kilogram is the only remaining unit defined by a physical piece: the "standard kilogram" in France. Given the accuracy of measurements nowadays, the tiny sublimation of iridium became non-neglectible... An absolute standard was needed. -- J-P. Rosen Adalog 2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00 http://www.adalog.fr