Engraving depicting Lord Kelvin's mirror galvanometer showing the mirror A with a small magnet attached. BB are bobbins would with fine copper wire through which current to be measured is passed.

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Size: 3840px × 5461px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, archival, archive, century, copper, electric, electricity, engraving, galvanometer, historic, historical, history, kelvin, light, measurement, mirror, reflection, scale, thomson, william