A Treatise on Electricity and Magnetism Volume 1 467.jpg
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A Treatise on Electricity and Magnetism Volume 1 467, Electric potential, Electric field lines, A Treatise on Electricity and Magnetism diagrams, A Treatise on Electricity and Magnetism Volume I
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電気及磁性論 巻1 467、電位、電場線、電気及磁性図論、電気及磁性論I巻
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nonmagnetic electric potential magnetism magnetically treatise tract tractive negative charge electrical system