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Comment Re:Relatively high temp... (Score 1) 58

I'm a bit surprised that the HTSC cables actually exist, as evident from the quoted wikipedia article. The high-temperature superconductors are ceramics, so normally you either produce a single crystal (not practical beyond a few millimeters in size, very expensive), or you compress a bunch of small superconducting grains into a solid object. Clearly, you would not be able to bend a cable made of such material too much, as it would simply break, and the contact areas between grains would always have higher resistance, limiting the amount of current such cable may carry. I would be curious to learn how these problems are solved in existing cables, but the articles describing them are pretty light on details (not surprisingly).

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