A Method for Generating Magnetic Charge

The Lorentz-transformed Gauss's law for magnetism predicts that magnetic charge density emerges naturally from the relativistic transformation of electric fields, establishing a formal symmetry between electricity and magnetism. An experimental design for a magnetic charge generator is presented that tests this prediction using a rotating electret. It is derived that an electret undergoing rigid rotation should generate magnetic charge proportional to the product of its rotation frequency and electric dipole moment. Two mutually exclusive scenarios are predicted to occur, distinguished by whether the electric field pattern rotates with its source or remains fixed in the laboratory frame. In Scenario A, the electric field co-rotates with the electret, yielding South magnetic charge Q′ₘ = −2μ₀ Ω·p < 0 residing on the lab frame. In Scenario B, the electric field possesses intrinsic source-free curl and remains fixed in the laboratory frame while the electret rotates through it, yielding South magnetic charge Qₘ = 2μ₀ Ω′·p′ < 0 residing on the rotating electret disk. Three independent detection methods—magneto-optical coatings to visualize charge location, electron beam deflection to map field topology, and SQUID magnetometry to measure magnetic flux—provide unambiguous discrimination through distinct signatures. The experiment offers the first direct test of magnetic charge generation via relativistic transformation, with implications for electromagnetic duality and the nature of charge.