Luminescent paint is paint that exhibits luminescence. In other words, it gives off visible light through fluorescence, phosphorescence, or radioluminescence. There are three types of luminous paints: fluorescent paint, phosphorescent paint and radioluminescent paint.
When a radium salt is mixed with a paste of zinc sulfide, the alpha radiation causes the zinc sulfide to glow, yielding a self-luminescent paint for watches, clocks, and instrument dials. From about 1913 up until the 1970s, several million radium dials, coated with a mixture of radium-226 and zinc sulfide, were manufactured.
Melting Point = 89.6 degrees Fahrenheit
I was watching the television series “The Mystery at Blind Frog Ranch”, season 2 episode 5 on Discovery, when they came across some rocks that had been drilled and gallium placed in the voids. The rocks were then crated and hidden in a cave system. I wanted to research the gallium for myself.
