I did not know of Poleni, thanks for that story. I always thought that the notable insight was by Robert Hooked. Oh wait I misread, it was Robert Hooke as you

I did not know of Poleni, thanks for that story. I always thought that the notable insight was by Robert Hooked. Oh wait I misread, it was Robert Hooke as you said, but Poleni used and developed it. I find the study of funicular shapes very gratifying.