Mi spiace alimentare l'OT su Leedskalnin ma è appena uscito questo interessante articolo in proposito ed ho pensato vi potesse interessare: Coral castle busted -- Interesting but not Anti-Gravity

Da notare che il redattore dell'articolo è Allan Sterling, noto sostenitore della fusione fredda e pronto a sostenere le tecnologie più impensabili (ed indimostrate).

Alcuni estratti:

How could one man, 5 feet tall and barely 100 pounds, excavate, shape, and hoist hundreds of massive coral blocks, the largest weighing 28 tons, into a structure by himself? This mystery has intrigued people for decades, drawing visitors from all over the world. But the truth is much less intriguing, though still impressive.
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First, let me tell you a little about our tour guide and his qualifications.

Note the wedge marks along the edges of the stone.

He has lived in the area all his life, and became intrigued by the castle as a child. He has also worked with the extraction of large stone, so he has physical experience with the processes. He's also talked to several local people who were witnesses to the building of the structure, and he has done research about the structure and its legends.

In the tour, he showed us photos of Ed hoisting the stones via a block and tackle apparatus, with heavy chains and three posts in a tripod. "Give me a lever long enough and I could move the world," is a famous quote by Archimedes. Do a Google image search on Ed Leedskalnin and block and tackle. This method was pioneered in Latvia where Ed emigrated from.

James has talked to people who remember seeing Ed using the block and tackle. And they remember him building during the day some times.

As for horizontal movement, James referred to a website: http://www.theforgottentechnology.com/ It features a carpenter by the name of W.T. Wallington from Flint, Michigan, who has demonstrated the ability to move very heavy objects horizontally by himself using simple methods.

With modern equipment, it's hard for us to fathom such feats, but before that equipment was available, clever people came up with ways to use leverage and pivots to move large objects.

The primary reason Ed built at night at first was that it is very hot during the day. I'm guessing that later on, as the mystique grew, he fostered that mystique the best he could.
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As for the writing on the door posts on the second floor, that was actually a common practice for immigrants in the area at the time. In order to secure their immigration number, they would write it on the door post. The numbers on Ed's stone post are consistent with that.

The magnet motor contraption was nothing more than a very crude electric generator with copper coils (now absent) that powered two small lights, nothing more. It only worked as long as the generator was turning, which probably didn't happen very often because of its weight.

James pointed out the markings on the rock where Ed had used metal slats to pound into the rock to split it from the base. You chip away the vertical sides, then excavate a place large enough next to the stone to pound the iron slats in. James pointed to the iron slats on display and noted their pointed edge on one side and hammered edge on the opposite side. James himself has used that method. It is standard practice when you don't have explosives.

And the shaping of the rocks was done by a chain with a cutting edge on it. This is also standard practice.

As for the large pivoting door that you could turn with just one finger (both Jim and Fred remember doing that years ago, before the bearings gave out), which made people marvel at how Ed might have balanced that so well, James knows someone who did a 1-ton replica to illustrate the process. You find the center of gravity and drive in a post, remove stone from either side until it is balanced, and then you place the side posts so that they fit.
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Certo, pensare che un ometto nel suo laboratorio con 4 pezzi di ferro e due carrucole potesse utilizzare l'antigravità per fare i lavori di casa quando i laboratori più avanzati al mondo non sono mai riusciti nemmeno lontamente ad avere un briciolo di evidenza del fenomeno potrebbe dare un minimo da pensare, però si sa che l'uomo è sognatore ed ha bisogno di credere, il suo lato romantico ha bisogno di essere nutrito