phosphorescence

Sorry, tried several times and could not reply to the phosphorescence thread. This sounds a lot like image plates, refered to in this link as computed radiography. A carefully engineered material is exposed to radiation, usually X-rays, and it stores that image. The image is read out by...

I recently "charged" some glow-in-the-dark material and then shined a laser pointer on one part of it. After only a few seconds, I removed the laser light and noticed that the targeted part glowed considerably less than the rest of the material. Why?