European science news. Over the next five years, Ohm performed comprehensive electrical circuit experimentation using the Schweigger Multiplier, leading to his 1827 publication of ‘The Galvanic Circuit Investigated Mathematically’ (‘Die galvanische Kette, mathematisch bearbeitet’). This work led to ‘Ohm’s Law’ describing the mathematical proportions between tension (voltage), intensity (current), and reluctance (resistance) allowing for proper metering when applied to the galvanometer’s operation. Retro Electro Fun Fact: The galvanometer, with several enhancements from many others of the day, enabled a form of measurement. Suddenly, there could be standards, and numerous ones emerged. Read more about the story of the first internationally recognized unit of electrical resistance in the Retro Electro article ‘Ohm’s Day.’ (Link: https://
An illustration the test tool that Ampere devised when investigating electromagnetism.
there was a mathematical proof for the connection between electricity and magnetism. Over the next couple of years, he published more findings on this phenomenon, ultimately creating the field of study known as electrodynamics (électrodynamique). In his 1873 book ‘A Treatise on Electricity and Magnetism,’ James Clerk Maxwell built upon and refined his work.
In Prussia…
A Bavarian school teacher in Cologne bought a copy of Schweigger’s Journal in the summer of 1820. Georg Ohm was teaching mathematics and physics at the Jesuit Gymnasium at the time. This gave him the use of well-equipped laboratories and ensured early access to scientific journals, letters, and
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we get technical
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