Electric light bulbs, one with a screw fitting (upper right), another with a bayonet fitting (lower left).

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Size: 4298px × 4139px
Photo credit: © TEK IMAGE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -life, -ray, argon, bayonet, bulb, bulbs, coloured, electric, electrical, electricity, energy, filament, fitting, glass, incandescent, industry, life, light, nitrogen, physics, radiograph, radiography, screw, spiral, technological, technology, tungsten, xray