>By "high-temperature" superconductivity, physicists mean liquid nitrogen temperature ...sure, but there are superconductors at a lot warmer temperatures than

>By "high-temperature" superconductivity, physicists mean liquid nitrogen temperature ...sure, but there are superconductors at a lot warmer temperatures than 77K. mercury barium calcium copper oxide at 133 K (atmospheric pressure). http://adsabs.harvard.edu/abs/1993Natur.363...56S http://adsabs.harvard.edu/abs/1993Natur.363...56S Hydrogen Sulfide at 203K, under pressure: http://physicsworld.com/cws/article/news/2015/aug/21/hydrogen-sulfide-is-warmest-ever-superconductor-at-203-k http://physicsworld.com/cws/article/news/2015/aug/21/hydroge...