A charged atomic nucleus with non-zero spin produces a magnetic field whose strength may be expressed by the size of its magnetic moment μ. The magnetization may be distributed over the volume of the nucleus. The distribution of nuclear magnetization is its deviation from that of a point nucleus, and is expressed by the parameter ε. Moskowitz and Lombardi observed that for a series of ten mercury isotopes, a simple relation existed between the magnetic distribution ε and the magnetic moment μ, namely ε = α/μ, where α is a constant, "Distribution of Nuclear Magnetization in Mercury Isotopes" ("Phys. Lett. 1973").