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Description
An electrical filament is a thread of metal, usually tungsten, which is used to convert electricity into light in incandescent light bulbs and into heat in vacuum tube devices.

The first successful light bulb filaments were made of carbon (from bamboo), later replaced with tungsten.

An electrical current travels through the filament and because of the electrical resistance of the filament makes it white-hot and generates light and heat. It is normally in a vacuum or a noble gas or inert gas inside a glass enclosure to stop oxidation. Small amounts of a halogen can be added to facilitate transport of evaporated tungsten atoms back to the filament, resulting in significantly prolonged lifetime when used at higher temperatures, which is exploited in halogen lamps. Electrical filaments are used in hot cathodes of various types of vacuum tubes and electron guns as sources of electrons.

Model

Light Bulb [link] by PrettyNila [link]

Thanks

Dedicated to who is a little ray of light all on his own

Description
An electrical filament is a thread of metal, usually tungsten, which is used to convert electricity into light in incandescent light bulbs and into heat in vacuum tube devices.

The first successful light bulb filaments were made of carbon (from bamboo), later replaced with tungsten.

An electrical current travels through the filament and because of the electrical resistance of the filament makes it white-hot and generates light and heat. It is normally in a vacuum or a noble gas or inert gas inside a glass enclosure to stop oxidation. Small amounts of a halogen can be added to facilitate transport of evaporated tungsten atoms back to the filament, resulting in significantly prolonged lifetime when used at higher temperatures, which is exploited in halogen lamps. Electrical filaments are used in hot cathodes of various types of vacuum tubes and electron guns as sources of electrons.

Model

Light Bulb [link] by PrettyNila [link]

Thanks

Dedicated to who is a little ray of light all on his own