- Добавил: TRex
- Дата: 20-03-2020, 17:56
- Комментариев: 0

Автор: Ernst O. Göbel, Uwe Siegner
Издательство: Wiley-VCH
Год: 2019
Формат: PDF
Страниц: 272
Размер: 18 Mb
Язык: English
The International System of Units, the SI, provides the foundation for all measurements in science, engineering, economics, and society. The SI has been fundamentally revised in 2019. The new SI is a universal and highly stable unit system based on invariable constants of nature. Its implementation rests on quantum metrology and quantum standards, which base measurements on the manipulation and counting of single quantum objects, such as electrons, photons, ions, and flux quanta.