https://changzh.me/en/tags/study-notes/Recent content in Study Notes on Blog of BrianHugoenSat, 11 Jul 2026 10:45:00 +0800https://changzh.me/en/posts/electromagnetism-notes/Sat, 11 Jul 2026 10:45:00 +0800https://changzh.me/en/posts/electromagnetism-notes/<p>I have been systematically studying electromagnetism, tracing the full arc from electric fields, magnetic fields, and circuits through field energy, LC oscillations, and power generation. This post organises those scattered notes into a coherent framework — partly as a personal review, partly in the hope that it helps others working through the same material.</p> <p>The derivations involve quite a few equations, but the core is really just one thread: <strong>electricity and magnetism are two sides of the same coin, and energy flows through the field</strong>.</p>