Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Fun Lighting and other Lighting topics.
"Black" lights are really purple, shedding a form of ultraviolet light that lends an eerie glow to a dark room. They are perhaps best known as a party accessory of the 1960s and 1970s, but are extensively used in non-destructive testing of everything from crime scenes to banknotes.
The fun quality of black lights is related to their ability to light up anything phosphorescent -- including people's teeth and fingernails. Clubs and amusement parks use phosphorescent paint to achieve special effects when black lights are lit. For a fun experiment, try writing with a highlighter, then shining a black light on it!
Guru Spotlight |
Patricia Walters-Fischer |