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Post by Deleted on May 11, 2020 16:37:58 GMT -8
It appears that physicists have found a room temperature superconductor by overlapping twisted graphene lattices. "When graphene layers are stacked on top of each other, their electrical properties change. And in 2018, an MIT team discovered something incredible occurs when two of these layers were stacked slightly askew. By twisting the top layer to a “magic angle” of 1.1 degrees off-kilter, the double-layer structure could suddenly shift between being an electrical insulator and a superconductor." You can read more at newatlas.com/materials/graphene-insulator-superconductor-twisted-magic-angle/
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Post by admin on May 12, 2020 9:43:45 GMT -8
Meaning?
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Post by Deleted on May 12, 2020 14:45:55 GMT -8
A superconductor allows electricity to propagate without resistance. Normally a portion of the electricity that comes from the electric company is lost in transmission. Southern California buys power from Grand Coulee Dam but about 15% of the electricity is lost to resistance in transmission. Resistance creates heat which creates more resistance which shortens the life of the transmission line.
Superconductors also have unusual magnetic properties. They create a magnetic field that repels a normal magnetic object no matter which way (magnetic north or magnetic south ) it is facing. The experiment that sticks in my mind shows a magnet spinning above a superconductor. One of the scientists moved the superconductor and the magnet followed it. He put the superconductor above the magnet and it hovered below it at the same distance it had been above it. The superconductor magnetic field positions a magnet a precise distance away from it. This plays a role in the magnetic levitation trains that carry passengers in Japan and China. Those use superconductors that have to be cooled to very low temperatures. The one that uses liquid nitrogen was called a high temperature superconductor, compared to the one that used liquid helium. Computer parts, if changed to superconductive material would have no need for a fan, they would not generate heat, and they would last much longer. But research scientists can imagine more uses for them than I can. The technological revolution has only just begun.
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Post by admin on May 12, 2020 15:02:17 GMT -8
Could this lead to free electricity?
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Post by Deleted on May 12, 2020 22:08:40 GMT -8
I doubt it. It could lead to cheaper electricity for sure. But I don't have the creative familiarity and imagination that physicist engineers have. It could lead to electronics that never wear out, and electricity storage facilities that prevent brown-outs during peak load times. If our highways become superconductor pathways, (major transmission lines between Grand Coulee and Southern California), magnetic cars could float above the pavement and be moved forward by magnets on the sides of the road. People could wear magnetic body suits and fly through the air above the pavement, propelled to their destination by the magnets on the sides of the road. But all that electro-magnetism would probably be harmful for DNA. So the insulating quality would be needed to protect people in the vehicles or the body suits.
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Post by admin on May 13, 2020 6:17:12 GMT -8
@lowell, I think they do know how to produce free energy (like Tesla did) but they would never publicize it or make it available because they need to make money from everything.
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Post by Deleted on May 13, 2020 14:40:26 GMT -8
Yes, well there is wind energy and solar energy that we know of. That is kind of like free energy. We don't have to pay the Sun for its energy and we don't have to worship a wind God for the power of the wind. There are probably things that Tesla understood that aren't taught in school yet. Things that are still to be re-discovered.
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