Sagot :
The Tungsten filament, Exhaust Tube, Lead Wire, dumet wire, Stem, Fuse And Gas Filling
The thing inside the glass bulb of an incandescent lamp ---> is a filament which is visible as the horizontal line between the vertical supply wires.
The said filament heated to a high temperature, by passing an electric current through it, until it glows with visible light (incandescence).
The hot filament is protected from oxidation with a glass or quartz bulb that is filled with inert gas or evacuated.