Structure of a standard P21W automotive incandescent light bulb
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Download scientific diagram | Structure of a standard P21W automotive incandescent light bulb from publication: A Simple Laboratory Experiment for Measuring the Expansivity of Tungsten at Elevated Temperatures | A laser pointer is used to backlight the tungsten filament of an ordinary P21W automotive light bulb, gradually driven to incandescence by direct current. Dimensional changes in the filament shadowgraphs are measured, then integrated to voltage-current data, in order to | Tungsten, Elevated Temperature and Filamentation | ResearchGate, the professional network for scientists.
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