What is the tungsten thread?

and tungsten fiber is a thin strand of metal that lights up very clearly when the electric current passes. In the way and sealing inside the glass vessel filled with inert gas, the tungsten fiber can shine clearly enough to light up the room. It was the integration of tungsten fiber into its electric lighting system, which led the world Thomas Edison brought a loan for inventing an electric bulb when in fact dozens of scientists experimented with electric light.

Tungsten is an element (symbol: w; atomic number 74). Almost twice as thick than lead, has the highest melting point of all metals at 6192 ° F (3422 ° C); Of all the elements, only Carbon's melting point is higher. Thanks to these features, Tungsten is very useful not only in electrical technology, but also for military applications such as weapons. Another use of tungsten is as part of jewelry, where the joke is combined with other materials for creating very hard and shiny compounds, although they can be fragile. Until the beginning of 20. One hundredFlying the most successful bulbs used the fiber of carbonized bamboo, which lasted about 1200 hours. Edison was not the first to use Tungsten, who was introduced in 1904 as a torturing fiber of the bulb in Europe.

In 1906, Edison's Company General Electric (GE) developed a process to make pure tungsten flexible enough to get into the curled wire. The use of coiled wire made GE enabled to increase the surface area of ​​tungsten, which would be inside the bulb. In 1911, the company produced and sold bulbs using new fibers that survived all the others. Progress in Tje's technology continued almost continuous, so the cost of running a bulb at the turn of the 21st century was less than 5% of what it was in 1911.

Despite its success as a light source of bulbs, the tungsten fiber is remarkably ineffective in the production of light. About 90% of the energy used in the operation of the heatVKY is emitted as heat, not light. Since more efficient methods of light production, especially fluorescent lighting and light -radiating diodes (LED), have been developed, some of them demanded a ban on the bulb as measures to save energy.