{
  "chosen_velocity_m_s": 1000.0,
  "B0_T": 2e-08,
  "gradient_T_m": 2e-12,
  "interval_length_m": 10000.0,
  "incoming_Poynting_power_per_area_W_m2": 9.549296580315316e-07,
  "magnetic_energy_increase_per_area_W_m2": 4.774648290157658e-07,
  "field_work_per_area_W_m2": 4.774648290157658e-07,
  "nonideal_E_plus_u_cross_B": 0.0,
  "limits": "Instantaneous ideal-induction/Poynting counterexample, not a full MHD evolution. Positive field work is not by itself irreversible heating or changing field connectivity."
}