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.
Another option is Amontillado wine, which can be used instead of dry Marsala. Pedro Ximenez is a white Spanish wine that can be used as an alternative to sweet Marsala. If you have both sherry and sweet Vermouth, mix them in equal amounts and use it as a replacement for Marsala wine.