The Definitions Of The Electric And Magnetic Constants

The electric constant ε_o is defined as 1 / (μ_oc²) where μ_o is the magnetic constant and c is the speed of light in a vacuum. μ_o is defined as 4π × 10^-7 N / A². A newton is defined as the force necessary to accelerate a kilogram by 1 m / s². An ampere has a proposed definition in terms of the charge of a proton. The charge of a proton has a proposed definition of 1.60217 × 10^-19 A s. A kilogram has a proposed definition in terms of Planck's constant. Planck's constant has a proposed definition of 6.62606 × 10^-34 kg m² / s. A meter is defined as the distance light travels in a vacuum in 1 / 299792458 s. A second is defined in terms of the period of light emitted with respect to a certain transition of cesium 133.