Superconductors could lead to scientific breakthroughs

Superconductors could lead to scientific breakthroughs; ENGLAND: Cheshire: Helsby High School: INT 'A' level student's hands pour mixture into pestle and hand starts to grind using mortar Student wearing protective goggles pounding with mortar and pestle Powder being mixed SIDE student pouring liquid nitrogen into small cup containing chemical mixture ZOOM IN Hand holds cup as other hand holds solidified piece of mixture suspended from twine as cup removed & piece of mixture held close to magnet Piece mixture held suspended between poles of magnet - starts to swing only when heats up Oxfordshire: Oxford University: Dr Chris Grosvenor (Oxford University) interview SOT - 'The problem -- solved'