I hope some kind of 50's radiation hasn't messed up my scanner here, I tried to "glow" them but the chemicals are all used up. Glow-in-the-dark products contain phosphors. A phosphor is a substance that radiates visible light after being energized. They are photoluminescent...that is energized by light. Still seems like a miracle to me. In the Bible story, little David takes the sword from Goliath and cuts off his head. That seems kinda brutal...all this time I just thought he bopped him in the noggin with a pebble from his "old-style" slingshot.
"SUPER-GLO" Picture Card (EXPOSE TO LIGHT-SEE IT GLOW IN THE DARK) circa 1950 Collection Jim Linderman
Actually, David did kill Goliath with the slingshot, and then cut his head off with Goliath's sword. You know. Just to make sure. :)
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