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The "it" in the title refers to what is now known as Ohm's law. Georg Simon Ohm (1789-1854) lived at a time when there were no calibrated indicators for electric current. There was no volt or amp; these were established much later by the 1881 International Electrical Congress. The resources available to Ohm were: 1) the discovery of Oersted, who in 1520 showed that a magnetic field surrounded a wire carrying electric current; 2) the electrochemical cell, described by Volta in 1800; and 3) the thermoelectric effect, discovered by Seebeck in 1822. How Ohm discovered his law with these varied and limited resources is the subject of this article.
Engineering in Medicine and Biology Magazine, IEEE (Volume:17 , Issue: 3 )
Date of Publication: May-June 1998