Post #6 126 Jul 15, 2026, 12:17 UTC \(I_1 = F^{\mu\nu} F_{\mu\nu} = 2 \left( B^2 - \frac{E^2}{c^2} \right)\)\(I_2 = \tilde{F}^{\mu\nu} F_{\mu\nu} = -\frac{4}{c} \mathbf{E} \cdot \mathbf{B}\) 👍 5 ❤ 3