I wrote the following for Servo Magazine but those folks never paid. So here it is for free.
You may have heard of Thomas Moray, PhD. The good doctor lived in the late 1800s and early 1900s around the time of Nicola Tesla. Like Tesla, Dr. Moray spent his time wondering about electricity. He claimed to have found a way to harvest electrical energy far from power lines, rivers or windmills. Witnesses said he got enough power to cook a turkey. The aroma must have been enticing!
Observers demanded to know how the good doctor did it but refused to pay for lessons. Moray wouldn't budge without cash in hand. It was, after all, his invention and he had the right to reap his rewards from it. The story remained a mystery, a scientific standoff. A few people in the states and in Germany replicated his work. Still, it didn't seem right to others. Moray and the people who copied him were accused of being fakes and liars. Well, they were accused until modern times when NASA did some experiments with magnetic lines of force surrounding Earth. Seems there is plenty of low density power, high up in the atmosphere and in near space. It may have existed close to the ground before the planet was girdled with power lines. We know that Moray used little more than a long wire, a tuned coil and a vacuum tube diode. The patent office was irked because the tube was a cold cathode diode and they just knew that no diode could work that way. (Cold cathodes have been serving mankind for some 50-years now with no difficulties.)



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