The filament breaks.
Filament of light bulbs are made up of Tungsten.
No, not in the filament. You are probably thinking of compact fluorescent light bulbs, which do contain mercury.
That is the filament. Electricity traveling through the filament heats it to the point of glowing brightly - that is the light bulbs "light".
It would no longer work. Light bulbs are usually under vacuum and if air gets in the filament blows.
tungsten
After a light bulb blows, the metal filament usually breaks due to the heat and stress it endured during operation. The broken pieces may remain inside the bulb or fall to the bottom, depending on how it fails.
I have not had any problem obtaining incandescent light bulbs.
Domestic light bulbs are simply the light bulbs (usually of the filament type) used in the home.
the filament is neither too thick nor too light
The light bulbs do.
Argon is used in filament light bulbs to displace oxygen and prevent the filament from burning. It creates an inert atmosphere inside the bulb, helping to prolong the life of the filament and improve the overall efficiency of the bulb.
Tungsten is the filament used in electric light bulbs that glows white hot when subjected to an electric current.