關於紫外光的問題

Incandescent light bulb and fluroescent tubes both can give out ultraviolet radiation.
Incandescent light bulb gives out light by heating of the filament to high temperature. In such a way, it behaves more or less like a [black body]. As the black body spectrum covers all possible wavelengths, there is a certain percentage of radiation emitted is in the ultraviolet rgion.
Fluorescent tubes gives out visible light by collision of electrons with mercury vapours in the tube. Such collision leads to the emission of ultraviolet light by the mercury vapour atoms. Most of the ultraviolet radaition excites the fluorescent material coated on the side of the tube to give off visible light, but some of the ultraviolet radiation would penetrate the tube into the surroundings.

不會,因為太陽放出的是強光

不會,因為燈和太陽的物質不同所以射出來的東西也不同,但是它們都可以發光.