Glödtråden
Glödtråden, commonly known as the incandescent filament, is a key component in traditional incandescent light bulbs. It consists of a thin wire, typically made from tungsten, which is coiled to increase its surface area and efficiency. When an electric current passes through the filament, it heats up to a high temperature, causing it to glow and emit light. This process is known as incandescence, where the filament radiates visible light along with infrared radiation (heat).
Tungsten is used due to its high melting point (3,422 °C or 6,192 °F), which allows it
Glödtråden was first developed in the late 19th century as part of efforts to create practical electric
Despite their inefficiency—only about 10% of the energy is converted into light, with the rest lost as