With radioactive glow powder, is mixed with radioactive substances in the phosphor, the use of radioactive substances constantly emitting rays to excite the phosphor glow, this type of glow powder glow time is very long, but because of toxic and harmful and environmental pollution, etc., so the appl

Phosphor (commonly known as glow powder), usually divided into photoluminescent storage glow powder and glow powder with radioactive two types.