Answer
Luminescence is the emission of light by certain materials when they are relatively cooled. It can be compared to light emitted from incandescent bodies such as burning wood or coal, molten iron and wire heated by an electric current.
Work Step by Step
Luminescence is the emission of light by certain materials when they are relatively cooled. It can be compared to light emitted from incandescent bodies such as burning wood or coal, molten iron and wire heated by an electric current.