Quote:
Originally Posted by Flyndaran
I thought the reason why superconductors that work at liquid nitrogen temperatures were so sought after was mostly about the high cost of using liquid hydrogen.
And we are talking about major industrial and compact efficient drives, not just technically possible.
That way leads to a breakdown of TL definitions.
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I don't know. It was first done in 1889, but by the 40s it was definitely a thing that people could do pretty reliably, I think.