Researchers at the National Science Foundation (NSF) and Princeton University are exploring the properties of magnesium diboride (MgB2), a compound thought to allow the passage of electric current with no resistance. In copper oxide superconductors, the interfaces between material crystals interfere with the flow of electric current. This is not the case with MgB2. Potential applications: computers and electronics. The process of making the superconducting compound into wire or other practical devices is expected to take several years. Contact David Nelson of the NSF at (703) 292-4932.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
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