Tesla was not working on "free" energy, although he had the altruistic but misguided idea that if you could transmit energy wirelessly it would be so cheap as to be nearly free. (Of course, since there is no way to meter electromagnetic energy, you really don't have any choice but to give it away.) What Tesla apparently didn't understand was the nearly insatiable demand for cheap energy. He also didn't know what we know today about the dangers of high-power electromagnetic radiation. (Or maybe he did, if the "Tesla Death Ray" stories are to be believed, and just chose to ignore the danger.)
Tesla also gave some of his patents to George Westinghouse, a move that guaranteed the success of ac power and made Westinghouse even richer than he already was, but ultimately cost Tesla millions of dollars in royalties. This was back in the days when workers made a buck a day and a million bucks went a very long way. Had he kept just some of the royalties, he would have had plenty of money to fund his research.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let�s make one more addition to our series on hydraulics. I�ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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