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Keywords: Tin 80gauss 1.6K.jpg en The tin cylinder has been cooled down from 4 2K to 1 6K The current in the electromagnet has been kept constant However the tin became superconducting at about 3K FLUX HAS BEEN EXPELLED FROM THE CYLINDER Meissner effect Own I AlfredLeitner took this photograph as part of my movie about Type I Superconductivity 1964 My movie has U S copyright 1964 which expired and was not renewed PUBLUC DOMAIN Low temperature physics Meissner effect |