دانلود کتاب Precise Dimensions: A History of Units From 1791–2018

Units are the foundation for all measurement of the natural world, and from which standard, our understanding develops. This book, stemming from a conference on the history of units organised by the editors, provides a detailed and discursive examination of the history of units within physics, in advance of the proposed redefinition of the SI base units at the General Conference on Weights and Measures in 2018. It features contributions from leading researchers in metrology and history.
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MOSFET scaling
[](https://en.wikipedia.org/wiki/Template:Semiconductor_manufacturing_processes)
gives an idea of how precise semiconductor manufacturing has become.
# Timekeeping accuracy
James A. Barnes, “[Basic Concepts of Precise Time and Frequency](https://isidore.co/misc/Physics%20papers%20and%20books/Zotero/storage/L9G6VUWB/Barnes%20-%201974%20-%20Basic%20concepts%20of%20precise%20time%20and%20frequency.pdf),” *Time and Frequency: Theory and Fundamentals* 140 (1974): 1–14
cited on p. 2-4 of Malcolm Cooper and Jim Grozier, eds., [*Precise Dimensions: A History of Units from 1791-2018*](https://isidore.co/calibre/#panel=book_details&book_id=9107) , IOP Expanding Physics (A History of Units from 1791 to 2018, Bristol, UK: IOP Publishing, 2017)
gives the evolution of time-measurement throughout history:
[](https://isidore.co/misc/Physics%20papers%20and%20books/Zotero/storage/L9G6VUWB/Barnes%20-%201974%20-%20Basic%20concepts%20of%20precise%20time%20and%20frequency.pdf)
source: "[Is there a "Moore's Law" of length-determining apparatuses?](https://hsm.stackexchange.com/a/14569/232)"