🧭 Ballistic Moving-Coil Galvanometer: Charge Throw, Damping and Resonance (2D)

Front view of a moving-coil galvanometer with a lamp-and-scale readout. Choose a charge pulse, a steady current or an alternating current, then set turns, flux density, inertia, torsion, damping and drive, and watch the coil swing. The first throw, steady deflection, resonance curve and log decrement come from the damped torsion equation, with four in-page numerical checks. A measurement companion to the 3D galvanometer environment.