Persistence of Electromagnetic Units in Magnetism

The centimeter-gram-second system of electromagnetic units (EMU) has been used in magnetism since the late 19th century. The International System of Units (SI), a successor to Giorgi's 1901 meter-kilogram-second system, was adopted by the General Conference on Weights and Measures in 1960. However, EMU remains in common use for the expression of magnetic data. The forthcoming revision of the SI provides an excellent reason for magnetics researchers to abandon the use of EMU.