schoolgirl hand cranks a dynamo generating electricity to light a bulb

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schoolgirl hand cranks a dynamo generating electricity to light a bulb

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Size: 3695px × 5268px
Photo credit: © sciencephotos / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: armature, bulb, commutator, crank, cranks, dynamo, electric, electrical, experiment, generate, generator, laboratory, lamp, light, schoolgirl