IN the account which Prof. Ledge gives of his very interesting experiments (NATURE, March 25, p. 484) he describes an observation which at first sight seemed to show the existence of residual ...
Diamagnetic levitation systems employ the unique properties of diamagnetic materials, such as pyrolytic graphite, in conjunction with permanent magnets to achieve stable, contactless levitation at ...
South Korean researchers published papers suggesting they had discovered a room temperature superconductor. However, another paper with resistivity charts shows resistance that is like regular copper.
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