Electrowinning Cell (2D): Faraday & Ohm's Law Copper Plating

The 3D original renders a generic decorative equipment scene shared across many mineral-processing pages, with readouts driven by sine waves rather than the process itself. This 2D companion instead builds the real electrowinning mechanic the title promises: Faraday's law sets the copper deposition rate from cell current and efficiency, and Ohm's law through the electrolyte sets the cell voltage from current density, temperature and electrode gap, so dragging a slider genuinely changes the physics and the numbers shown.