Phosphorus atoms embedded in plastic absorb light energy and slowly release the light in a glow-in- the dark process is called?

Answer 1

In some elements it takes time for the energized electrons to fall back and give up their energy. These elements store energy and give off light slowly over a period of time. This is how glow-in-the-dark material works. Embedded in the material are atoms of the element phosphorus. When light energy hits the phosphorus atoms, some of the electrons absorb energy. When the electrons fall back, they release

the stored energy and the material glows. The glow stops when all the electrons have returned to the lowest energy level. The process is called photoluminescence. The word "photo" means light and the word "luminescence" means glowing.

The answer is photoluminescence.