Thomas Edison's improved form of JW Trowbridge's electric dynamometer(Thomas Edisons improved form of JW Trowbridges electric dynamometer, 1879)Unbekannt |
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1879 · engraving
· Picture ID: 778035
people · male · technology · country · science · electricity · electric · machine · machinery · innovation · location · century · concept · physics · invention · monochrome · laboratory equipment · scientific instrument · united states of america · united states · 19th century · black white · black and white · nineteenth century · american · america · oxford science archive · dynamometer · engraving · unknown · thomas edison · edison · thomas alva · Oxford Science Archive/Heritage Images |
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