What is phosphoresent?

Answer 1

Phosphoresent means emmitting light without heat as by slow oxidation of phosphorous. Basically meaning that things such as glow in the dark stickers let out phosphorous that makes them glow.

Hope this helps. ;D

Answer 2

Phosphorescence is a type of photoluminescence where a material absorbs energy and then re-emits it as light over a longer period of time. This delayed emission of light can last anywhere from seconds to hours, depending on the material. Glow-in-the-dark items often exhibit phosphorescence.