
In the human journey of exploring illumination, tungsten filament, as one of the core materials in lighting technology, has played a crucial role. From the initial incandescent bulbs to modern high-efficiency tungsten-halogen lamps, tungsten filament, with its unique physical and chemical properties, has led multiple innovations in lighting technology, bringing unprecedented convenience and comfort to people’s lives. I. Tungsten Filament: The Foundation of Lighting Technology When Edison successfully developed the first practical light bulb in 1879, he used carbonized cotton…