| antisymmetric 4 × 4 tensor defined as
where is the electric field strength, is the magnetic flux density, is the imaginary unit, and is the speed of light in vacuum
Note 1 to entry: The electromagnetic field tensor is equal to the four-rotation of the electromagnetic four-potential: .
Note 2 to entry: The Maxwell equations can be derived from the four-divergence of the electromagnetic field tensor and the four-current density using the Lorenz convention by the relation .
Note 3 to entry: The coherent SI unit of electromagnetic field tensor is tesla, .