I have not had any problem obtaining incandescent light bulbs.
the filament is neither too thick nor too light
Generally, tungsten.
Modern light bulb filaments are usually Tungsten not Carbon. However early bulbs used things like silk coated with Carbon. Filament means thin thread. The bulbs are filled with inert gas like Argon to stop the filament from burning up with oxygen. Arc lamps use Carbon rods though.
tungsten filament, aluminum base
tungsten
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".
The filament breaks.
tungsten
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.
about 10% the filament light bulbs give off about 90% heat and 10% light
Tungsten
Assuming you're talking about light bulbs... the filament is made from Tungsten.
light bulbs have metal contacts that connect to an electrical circuit and a filament. power lights up the filament in the bulb .