All radiation is a form of energy, most of which is invisible to the human eye. UV radiation is only one form of radiation and it is measured on a scientific scale called the electromagnetic (EM) spectrum. UV radiation is only one type of EM energy you may be familiar with.
Marsala is a wine, dry or sweet, produced in the region surrounding the Italian city of Marsala in Sicily. Marsala first received Denominazione di Origine Controllata (DOC) status in 1969.
While the city's natives sometimes drink vintage Marsala, the wine produced for export is universally fortified similar to Port, Madeira and Sherry. Originally, this addition of alcohol was to ensure that it would last on long ocean voyages, but now it is made that way because of its popularity in foreign markets.