We propose a new system for the fundamental units, which includes and goes beyond the present redefinition of the SI, by choosing also c=ℏ=1. By fixing c=c∘m/s = 1, ℏ=ℏ∘ Js = 1 and μ∘=μ∘N/A2 = 1, it allows us to define the metre, the joule, and the ampere as equal to (1/299 792 458) s, (1/ℏ∘=.948...×1034)s−1 and μ∘N=μ∘c∘/ℏ∘s−1=1.890...×1018s−1. It presents at the same time the advantages and elegance of a system with ℏ=c=μ∘=ϵ∘=k=NA=1, where the vacuum magnetic permeability, electric permittivity, and impedance are all equal to 1. All units are rescaled from the natural ones and proportional to the s, s−1, s−2, ... or just 1, as for the coulomb, ohm and weber, now dimensionless. The coulomb is equal to μ∘c∘/ℏ∘=1.890...×1018, and the elementary charge to e=1.602...×10−19C=4πα=.3028... . The ohm is equal to 1/μ∘c∘ so that the impedance of the vacuum is Z∘=376.730...Ω=1. The volt is 1/μ∘c∘ℏ∘s−1=5.017...×1015s−1, and the tesla c∘V/m = c∘3/μ∘ℏ∘s−2=4.509...×1032s−2. The weber is 1/μ∘c∘ℏ∘=5.017...×1015. KJ=483597.... GHz/V =e/π= .09639..., and RK=25812....Ω=1/2α≃68.518. One can also fix e = 1.602 176 634 ×10−19 C, at the price of adjusting the coulomb and all electrical units with μ∘=4π×10−7η2 where η2,∝α, is very close to 1.
@article{arxiv.1908.01584,
title = {A New Dual System For The Fundamental Units, including and going beyond the newly revised SI},
author = {Pierre Fayet},
journal= {arXiv preprint arXiv:1908.01584},
year = {2019}
}