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In four instalments between March 1861 and February 1862, James Clerk Maxwell | In four instalments between March 1861 and February 1862, James Clerk Maxwell | ||
filled space with spinning cells and little rolling particles, to explain what a | filled space with spinning cells and little rolling particles, to explain what a | ||
magnetic field actually ''is''. | magnetic field actually ''is''. '''His machine was wrong.''' On the way to building it, | ||
he wrote down the displacement current, derived the speed of light from two | he wrote down the displacement current, derived the speed of light from two | ||
electrical measurements that had nothing to do with optics, and founded field | electrical measurements that had nothing to do with optics, and founded field | ||
Revision as of 02:40, 9 September 2026
Introduction
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The Current Program (Round 3)
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Program History
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Hamilton's Principle
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Noether's 1st Theorem
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The Work of James Clerk Maxwell
On Physical Lines of Force
In four instalments between March 1861 and February 1862, James Clerk Maxwell
filled space with spinning cells and little rolling particles, to explain what a
magnetic field actually is. His machine was wrong. On the way to building it,
he wrote down the displacement current, derived the speed of light from two
electrical measurements that had nothing to do with optics, and founded field
theory.
A 65-page reading edition: Maxwell's argument in his own order and register, the modern equations derived from his results, and a plain-language explainer for every major idea.
- Start reading →
- Introduction — the story, and why the paper matters
- The explainers — plain language, no mathematics
- The missing term — the one addition that made radio possible
Featured plate
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