Physics
Wimshurst electrostatic machine
Counter-rotating discs charge two jars until a spark crosses the gap.
Try this
Turn faster, widen the gap or raise humidity. Compare charge leakage with the energy released by each spark.
The model and its limits
Lumped influence-machine model with an approximate uniform-field breakdown threshold. Disc sectors and charge colours illustrate induction, not a solved electrostatic field.
Equations used in the module
Equations C dV/dt = I - V/R E = C V² / 2
