Silver saver: Nanotechnology keeps the shine on silver
Tuesday, April 12, 2011 - 12:00
in Paleontology & Archaeology
(PhysOrg.com) -- Anyone who's ever polished silver knows that keeping the tarnish at bay is never ending work. But, you may not know that polishing also rubs away some of the precious metal, whether it's your grandmother's silver bowl or a 19th century museum treasure.