energy, electricity, generation of electricity by rubbing, brushes on rotating discs, wood engraving, 19th century, 19th century, apparatus, apparatuses, device, devices, frictional electricity, triboelectric effect, experiment, experiments, test, tests, historic, historical, Additional-Rights-Clearences-Not Available

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Keywords: 19th, apparatus, apparatuses, brushes, century, device, devices, discs, effect, electricity, energy, experiment, experiments, frictional, generation, historic, historical, rotating, rubbing, test, tests, triboelectric