fémfilamentumokra

Fémfilamentumokra, often shortened to filament, refers to the thin wire at the heart of an incandescent light bulb. This filament is typically made from tungsten due to its exceptionally high melting point, which allows it to withstand the intense heat generated when an electric current passes through it. When electricity flows through the filament, its electrical resistance causes it to heat up to a very high temperature, producing light through incandescence. The filament is enclosed within a glass bulb, which is often filled with an inert gas or a vacuum to prevent the filament from oxidizing and burning out too quickly. Over time, the filament gradually evaporates, becoming thinner and eventually breaking, which leads to the bulb failing. The development of stable and efficient filaments was a crucial step in the widespread adoption of electric lighting. Early incandescent bulbs used filaments made from less durable materials like carbonized thread or bamboo, but tungsten proved to be a significant improvement, leading to longer-lasting and brighter light sources.