INCANDESCENT LIGHT:
Thin metal called a filament is surrounded by glass, electrical energy flowing through the filament heats it to become white hot.
A glass tube coating in phosphor is filled with mercury gas, electricity is passed through the mercury gas, which releases UV rays and excites the phosphor to produce white light.
Slightly different from fluorescence UV light hits phospor and stores up energy Emits light after uv light has stopped and glows in dark LIGHT EMITTING DIODE (LED): Is a semiconductor (A material that kind of conducts electricity) that emits light when an electric current is passed through it |