什么化学物质在紫外光照射下会发荧光?

应该就是荧光物质了

我找了两份材料，也不太清楚对不对
1.什么化学物质涂在墙上用光照就会反射亮光——荧光物质。（来自百度知道）
http://zhidao.baidu.com/question/35693940.html?si=4
2.这个是从外国网站上找的，是紫外线下显形的，我没全看懂=.=
里面也提到了“荧光剂”
Inks visible under ultraviolet light
Some inks glow faintly (fluoresce) when under an ultraviolet lamp. This is a property of many substances. There are commercially available inks that glow very brightly when illuminated using a black light or UV light. Invisible inks with fluorescent properties can be obtained in a variety of colors and even have formulations for non-porous surfaces so they can be used on glass, plastics, etc..

■laundry detergents that contain optical brighteners.
Other inks work in a near opposite way by absorbing ultraviolet light. When they are used on fluorescent paper, the written-on areas fluoresce less than the surrounding paper area