For example, the magnetic pressure of a magnetic field on a superconductor can be calculated by::formula_1where formula_2 is the force per unit area in pascals, formula_3 is the magnetic field just above the superconductor in teslas, and formula_4 = 4π×10−7 N·A−2 is the permeability of the vacuum.
:formula_1где formula_2 — сила на единицу площади поверхности в Паскалях, formula_3 — магнитное поле над сверхпроводником в Теслах, и formula_4 = 4π×10−7 N·A−2 — магнитная проницаемость вакуума.