This is in response to a long email I received about the Leyden (Leiden jar). It is not my opinion, in fact I don't think it has anything to do with Bessler, but in case I'm wrong I thought I'd air the views of another, no matter how wacky - he's aware of my opinion of his ideas.
I mentioned in my biography on Bessler, the coincidence of Pieter van Musschenbroek, a professor of physics at Leiden University, inventing the Leiden jar, an early method of storing static electricity, in 1745 - the year Bessler died, (it was also discovered by Ewald Georg von Kleist in Germany the previous year). I had previously examined the remote possibility that Bessler used static electricity in some way to provide the additional force often suggested as necessary, to make a gravity-driven wheel complete a full rotation, and recently the idea has reappeared in a couple of emails.
The story of the first test of the Leiden jar and its effect on van Musschenbroek's student helper, Andreas Cunaeus, is well reported in wikipedia. He was virtually knocked out by the strength of the electric shock he received and was unwell for two days following. Van Musschenbroek went on to arrange some spectacular demonstrations of the power of the device, and after having experienced the shock himself he wrote, in a letter to his French colleague Réaumur, that the whole kingdom of France could not compel him to repeat the experience. The French priest Jean Antoine Nollet, a great popularizer of electrical phenomena, learned of the Leiden experiments via this letter and lost no time in contriving even more spectacular demonstrations. They culminated in one involving 700 monks joined in a circle to a Leiden jar!
It was suggested that if 's Gravesande, being a close friend and colleague of Musschenbroek, was so intently examining Bessler's wheel perhaps it was because he suspected some electric component at work within the wheel.
The static electricity stored in the Leiden jar was generated in the first place by transforming mechanical work into electric energy, usually by means of friction against a glass. Jan Ingenhousz invented an electrostatic machine made of plate glass - in 1746.
It will be recalled that Pieter van Musschenbroek, was the guy who was contacted by Daniel Schumacher, Peter the Great's librarian, charged with buying experimental equipment for his universities and of course it was Schumacher who negotiated with Bessler to buy his wheel for Peter.
My correspondent wondered if, perhaps Bessler had already discovered how to generate and store static electricity in a capacitor, or something akin to the Leiden jar. This he might achieve by including glass plates within his wheel, as per Jan Ingenhousz's method. The capacitor would have to be fully charged before he began. However I have questioned whether it is possible to temporarily power a magnet by discharging a capacitor suddenly. I suspect that the resistance in the magnet's coils might be too high for the sudden discharge of static electricity to overcome, but I'm not knowledgeable about this.
He went on to suggest that if it were possible then it might lead one to suspect that Bessler had designed an electromagnet or even a simple solenoid, powered by sudden discharges of static electricity which could be used to deflect weights on springs, thus overcoming the wheel's reluctance to continue to turn. Bessler, you will recall, said that he used springs but not in the way you think.
I know - it's crazy, but I like it!
JC
