How long will glow paints glow?

1 Answer

Answer :

Their info says you might need 30 min of light exposure to charge it, then it will glow for 8 hr (although brightness will gradually go down during that time). If it’s a green glow, likely it is zinc sulfide. That it its material property, so will be able to do the charge/glow thing until it breaks down. Also, black light (UV) will cause it to charge and glow brightly while the light is on. Then it will fade down after the light is turned off. Sounds like a fun product. https://en.wikipedia.org/wiki/Zinc_sulfide https://www.softschools.com/formulas/chemistry/zinc_sulfide_formula/323/#:~:text=Chemical%20properties%3A%20Zinc%20sulfide%20is,to%20release%20hydrogen%20sulfide%20gas.

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