| http://www.w3.org/ns/prov#value | - a good example is the Stone of Bologna, studied by Galileo himself, which shows a yellow-orange afterglow when exposed to sunlight due to the presence of BaS impurities.4-6 The silicate family is an attractive class of materials for almost any application due to its interesting properties such as water and chemical resistance, visible light transparency, color variety upon doping and especially e
|
