Light bulb filament, SEM

Light bulb filament, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Light bulb filament. Coloured scanning electron micrograph (SEM) of a tungsten light bulb filament (blue) and the wire used to support it (yellow). The heat generated by an electrical current flowing through the filament makes it glow white hot. Magnification: x80 when printed at 10 centimetres wide.

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Keywords: coil, coiled, coloured, electrical, electricity, energy, false-coloured, filament, heat, heated, hot, industry, light bulb, metal, physical, physics, scanning electron micrograph, scanning electron microscope, sem, support wire, technological, technology, tungsten, wire

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