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Comment Superconductor and Anti-magnetism (Score 2, Interesting) 430

Superconductors possess a very interesting phenomena. They are anti-magnetic. Several years ago I attended a physics day at a local university. In one of the exhibits a grad student was demonstrating this property. He place a small magnet on a superconductor and poured liquid nitrogen on the superconductor. The magnet rose and floated about an inch above the superconductor. I asked the grad student what would happen if he repeated the demostration and placed a supermagnet (a rare earth magnet) ontop the superconductor. He said he was game. We stole a supermagnet from another demostration and conducted the experiment. When the liquid nitrogen was poured on the superconductor, the supermagnet shot up in the air like a bullet, ricocheted off the ceiling and rattled around the room. The antimagnetic property of a superconductor is not polarity oriented. The effect will work no matter which pole is placed ontop the superconductor. It is a repulsive force not an attractive force.
Since superconductors already possess one unique attribute (anti-magnetism), it would be very intriguing if it might possess a second (anti-gravitiationl). The other passing thought is that the world has longed for an anti-gravitational engine, but maybe it was right in front of our noses all the time but it was called something else, an anti-magnetic engine. The Earth along with many planets and stars in the universe possess magnetic fields.

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