Original poster: "Kreso Bukvic" <kreso.bukvic-at-kc.htnet.hr> Anywone want to buy a ( i do not know how it is called in English ) so main this will be a text in Croatian. It is a board of high temperature super ( thing that leads electricity). The dimensions are 35x35x8 mm. Critical temperature is Tc 77 K. It is known as YBCO ( itrium barium oxide ). Anyone wants it, let me know. Best Regards Krešo Bukvi