Hi, This might be of interest... https://interestingengineering.com/400-times-faster-superconductor BW, Ian -- -- ACCU - Professionalism in programming - http://www.accu.org -- My writing - https://sites.google.com/site/ianbruntlett/ -- Free Software page - https://sites.google.com/site/ianbruntlett/home/free-software