Eric Hopper was an artist I met at a church in Covington where he was giving a talk. While making his presentation, he would draw a picture on a large board using fluorescent chalk. At the end of the talk, they would turn the lights out and he would turn on a bank of ultraviolet lights. The result would be quite dramatic. The whole drawing would glow. He also did regular paintings, many with a religious theme.
Here are a couple of black and white pictures I took of him while he was drawing. I don't like to use flash while people are speaking, so these are available light only, which actually turned out okay.