An electrical filament is a thread of metal, usually tungsten, which is used to convert electricity into light in incandescent light bulbs (as developed in 1874 by Alexander Lodygin and in 1878 by Joseph Wilson Swan, among others), and into heat in vacuum tube devices. The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across Tungsten (ˈtʌŋstən also known as wolfram (/ˈwʊlfrəm/ is a Chemical element that has the symbol W and Atomic number 74 The incandescent light bulb, incandescent lamp or incandescent light globe is a source of electric Light that works by Incandescence, (a general Year 1874 ( MDCCCLXXIV) was a Common year starting on Thursday (link will display the full calendar of the Gregorian calendar (or a Common Alexander Nikolayevich Lodygin ( October 18 1847 – March 16 1923) ( Александр Николаевич Лодыгин in Year 1878 ( MDCCCLXXVIII) was a Common year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or a Common Sir Joseph Wilson Swan ( October 31, 1828 – May 27, 1914) was an English Physicist and Chemist, most famous This article is about the electronic device not an evacuated pipe used for experiments in Free-fall.
The first successful light bulb filaments were made of carbon (from bamboo), later replaced with tungsten. Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 Bamboo is a group of Woody perennial Evergreen Plants in the True grass family Poaceae, subfamily
Explanation
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. Electric current is the flow (movement of Electric charge. The SI unit of electric current is the Ampere. Electrical resistance is a ratio of the degree to which an object opposes an Electric current through it measured in Ohms Its reciprocal quantity is It is normally in a vacuum or a noble gas or inert gas inside a glass enclosure to stop oxidation. This vacuum means "absence of matter" or "an empty area or space" for the cleaning appliance see Vacuum cleaner. History Noble gas is translated from the German noun de ''Edelgas'' first used in 1898 by Hugo Erdmann to indicate their extremely low level of reactivity "Inert gases" is also used in a narrower sense for Noble gases An inert gas is any Gas that is not reactive with elements Glass in the common sense refers to a Hard, Brittle, transparent Solid, such as that used for Windows many Redox (shorthand for reduction-oxidation reaction describes all Chemical reactions in which atoms have their Oxidation number ( Oxidation state 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. Abundance Owing to their high Reactivity, the halogens are found in the environment only in compounds or as Ions Halide ions and oxoanions Tungsten (ˈtʌŋstən also known as wolfram (/ˈwʊlfrəm/ is a Chemical element that has the symbol W and Atomic number 74 A halogen lamp is an Incandescent lamp in which a Tungsten filament is sealed into a compact transparent envelope filled with an inert gas plus a small amount of Electrical filaments are used in hot cathodes of various types of vacuum tubes and electron guns as sources of electrons. Hot cathode is also a name for a Hot filament ionization gauge, a vacuum measuring device This article is about the electronic device not an evacuated pipe used for experiments in Free-fall. An electron gun (also called electron emitter) is an electrical component that produces an Electron beam that has a precise Kinetic energy and is most often The electron is a fundamental Subatomic particle that was identified and assigned the negative charge in 1897 by J
Types of filament
There are several different types of filament configuration available and it all depends on the lamp itself, and what characteristics are required. Some of these include but are not limited to C-6, CC-6, C-2V, CC-2V, C-8, CC-88, C-2F, CC-2F, C-Bar, C-Bar-6, C-8I, C-2R, CC-2R, Axial.
External links
- An brief article explaing the light bulb - "The Composition of the Light Bulb"
- The history of the light bulb