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| Položaj | Domena | Stran | Dejanja |
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| 1 | ru.wikipedia.org | /wiki/%D0%98%D0%B7%D... | |
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Изменения определений основных единиц СИ (2019)
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1 Содержание изменений · 2 Новое определение СИ · 3 Влияние изменений на основные единицы. 3.1 Секунда и метр; 3.2 Килограмм; 3.3 Ампер; 3.4 Кельвин; 3.5 Моль ... |
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| 2 | en.wikipedia.org | /wiki/2019_revision_... | |
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2019 revision of the SI
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In 2019, four of the seven SI base units specified in the International System of Quantities were redefined in terms of natural physical constants. |
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| 3 | iupac.org | /100/stories/the-new... | |
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The New SI - IUPAC 100
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15 мая 2019 г. — A new and revised SI was approved, adapted for the 21st century. These changes will be implemented on 20 May 2019, the next “World Metrology Day.” |
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| 4 | pswscience.org | /meeting/defining-fu... | |
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The New SI - Defining Fundamental Constants of Nature
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With the New SI, fundamental constants will be defined as exact values , and physical laws will be used to define unit reference values. The old SI was built on ... |
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| 5 | www.ptb.de | /cms/fileadmin/inter... | |
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The new International System of Units (SI)
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The SI is now being fundamentally revamped so that it will be able to face all scientific and technical challenges of the 21st century with ease. Fundamental. |
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| 6 | www.nist.gov | /si-redefinition | |
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SI Redefinition | NIST
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The SI — the modern metric system — has seven base units from which all other measurement units can be derived. On May 20, 2019, four of them — the kilogram, ... |
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| 7 | habr.com | /ru/news/700610/ | |
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Впервые за 31 год в Международную систему единиц ...
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21 нояб. 2022 г. — Впервые за 31 год в Международную систему единиц СИ добавились новые приставки ; Земля теперь весит 6 роннаграммов · единицы измерения · система si ... |
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| 8 | arxiv.org | /abs/1503.03496 | |
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[1503.03496] An introduction to the New SI
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Автор |
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| 9 | www.bipm.org | /en/-/2024-09-11-si-... | |
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2024-09-11-SI-brochure-301
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11 сент. 2024 г. — The BIPM has published a new version of the SI Brochure . The BIPM published version 3.01 of the 9th edition of the SI Brochure on 28 August 2024 ... |
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