Yes
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.
the first one was carbon filament
Filament of light bulbs are made up of Tungsten.
Light bulb filaments are usually made of tungsten, which has a very high melting point. Occasionally carbon is used as a filament.
Fluorescent lamps are brighter than filament light bulbs because they produce light by exciting mercury vapor and phosphor coating, which emits more visible light compared to the incandescent process of heating a filament wire to produce light. Additionally, fluorescent lamps are more energy-efficient and have a higher luminous efficacy, meaning they produce more light for the amount of energy consumed compared to filament light bulbs.
Yes, on an attritional basis, as the old ones burn out-
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".
Lewis Latimer improved the light bulb by inventing a carbon filament that made bulbs last longer and produce steadier light. His filament was a key advancement in making light bulbs more practical for everyday use.
The filament breaks.
Filament light bulbs are not very energy efficient, converting only about 5-10% of the electricity they consume into light, while the rest is lost as heat. This inefficiency is why other types of lighting like LED have become more popular for their energy-saving benefits.
tungsten