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These Lego Bionicle pieces glow under a black light.
These Lego Bionicle pieces glow under a black light. Many Lego parts glow, pretty much in all the colors of the rainbow.Eric Helmenstine
UV-lamps also emit some visible violet light.
Ultraviolet light is invisible, but black lights or UV-lamps also emit some visible violet light.Kallemax, wikipedia.org
The ice cubes in this drink glow in the dark.
The ice cubes in this drink glow in the dark. Do you know how I did it?Anne Helmenstine