Determining the value of the fine-structure constant from a current balance: Getting acquainted with some upcoming changes to the SI

@article{Davis2016DeterminingTV,
  title={Determining the value of the fine-structure constant from a current balance: Getting acquainted with some upcoming changes to the SI},
  author={Richard Davis},
  journal={American Journal of Physics},
  year={2016},
  volume={85},
  pages={364-368}
}
  • Richard Davis
  • Published 10 October 2016
  • Physics
  • American Journal of Physics
The revised International System of Units (SI), expected to be approved late in 2018, has implications for physics pedagogy. The ampere definition, which dates from 1948, will be replaced by a definition that fixes the numerical value of the elementary charge e in coulombs. The kilogram definition, which dates from 1889, will be replaced by a definition that fixes the numerical value of the Planck constant h in joule seconds. Existing SI equations will be completely unaffected. However, there… Expand
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