tungstenfilamentin

Tungsten filament is a type of electric light bulb filament made from tungsten, a heavy metal with the atomic number 74. It was developed in the early 20th century as a replacement for carbon filaments, which had a shorter lifespan and produced less light. Tungsten filaments are used in incandescent light bulbs, which produce light by heating the filament to a high temperature until it glows. The high melting point of tungsten, around 3,422 degrees Celsius, allows it to withstand the high temperatures required for incandescence without melting or evaporating. This makes tungsten filaments more durable and efficient than carbon filaments. However, tungsten filaments are also more brittle and prone to breaking, which can lead to shorter bulb lifespans. To improve the lifespan of tungsten filaments, manufacturers often use a process called "tungstenizing," which involves coating the filament with a thin layer of tungsten to increase its strength and durability. Despite their limitations, tungsten filaments remain a popular choice for incandescent light bulbs due to their high efficiency and warm, yellowish light output.