Innovation and application of tungsten filament in lighting technology
In the human exploration of light, tungsten filament, as one of the core materials of lighting technology, has played a vital role. From the original incandescent bulb to the modern high-efficiency halogen tungsten lamp, tungsten filament, with its unique physical and chemical properties, has led to many innovations in lighting technology, bringing unprecedented convenience and comfort to people’s lives. 1. Tungsten filament: the cornerstone of lighting technology When Edison successfully developed the first practical light bulb in 1879, he used carbon filaments made from cotton thread or bamboo fiber after high-temperature carbonization as filaments, but this carbon filament bulb had problems such as short life and easy breakage. Subsequently, with the continuous exploration and improvement of scientists, in the early twentieth century, William D. Coolidge, an engineer at General Electric Company in the United States, developed a process for drawing tungsten filaments, opening a new era of tungsten filaments in light bulb applications. Tungsten, as a metal with a melting point of up to 3410℃, is the single metal element with the highest melting point, which makes it an ideal material for making filaments that emit light stably at high temperatures. Its excellent heat resistance greatly improves the life and...
2025-02-28
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