Mediaeval Nanoparticles

In somewhere that is so closely associated with the past it can be difficult to draw attention to the 21st century city. There are 60 colourful and informative pictures around York at present. They are part of York Science & Innovation Grand Tour celebrating the City's achievements in this area.
Nanotechnology emerged in the 1980s and the University of York has a state of the art facility to explore this fascinating area. This picture of a single atom is on a wall opposite the Minster, and in a clever link to the Minster itself notes that silver and gold nanoparticles have been found in the Minster's mediaeval stained glass windows.