I'm not sure how different this is to the ball integrator?[0] or Vannevar Bush's differential analyser?[1] The water computer article says partial differentiato

I'm not sure how different this is to the ball integrator?[0] or Vannevar Bush's differential analyser?[1] The water computer article says partial differentiator, then integrator, it's unclear. [0] https://en.wikipedia.org/wiki/Ball-and-disk_integrator https://en.wikipedia.org/wiki/Ball-and-disk_integrator [1] https://en.wikipedia.org/wiki/Differential_analyser https://en.wikipedia.org/wiki/Differential_analyser