^[a]The meter is the distance traveled by light in vacuum during 1/299,792,458 s.

^[b]The kilogram is the unit of mass equal to that of the international prototype maintained at the International Bureau of Weights and Measures in Sevres, France.

^[c]The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.

^[d]The ampere is the current that, if maintained constant in two straight parallel conductors of infinite length and negligible circular cross section, placed 1m apart in vacuum, would produce between these conductors a force of 2 10 ^?7 N/m of length.

^[e]The Kelvin is the unit of thermodynamic temperature equal to 1/273.16 of the thermodynamic temperature of the triple point of water.

^[f]The mole is the amount of substance of a system that contains as many elementary entities as there are atoms in 0.012 kg of carbon 12, where such atoms are unbound and at rest in their ground state. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified groups of such particles.

^[g]The candela is the luminous...