Silvering is the chemical process of coating glass with a reflective substance.Glass mirrors were first coated by molten metal. Later, tin amalgam was used. The mercury contamination by this process made it necessary to switch to the more expensive silver coating, in order to create a mirror. Today, sputtering, powdered aluminium or other compounds are more often used for this purpose, although the process maintains the name "silvering". History In the early 10th century, the Iranian scientist… (More on Silvering)