OSLO (Reuters) - Scientists have made a strong, lightweight wire from carbon that might eventually be a rival to copper if its ability to conduct electricity can be improved, Cambridge University said on Thursday. They said it was the first time that the super-strong carbon wires, spun in a tiny furnace that looks like a candy floss machine with temperatures above 1,000 degrees Celsius (1,800 F), had been made "in a usable form" a millimeter (0.04...
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