Every Joule

Every Joule is a browser physics book by Techartist built around the energy topic in GCSE and IGCSE courses. It has ten lessons, running from energy stores to the power station and the idea that nothing is lost. Each lesson follows the same pattern: predict, watch a demo, click into the 3D models, read the explanation pages, then take a challenge. The first lesson shows eight energy-store models with their formulas. The book also has teacher pages, an index, quizzes and a sources section. The creator says on X that it was built with Opus 5.5 and Three.js.

Who it's for:Secondary-school students working through an energy unit in physics, and teachers looking for interactive demos for class.

Before you start: Free in the browser with no sign-in. The page shows touch hints, but full phone support isn't stated. The content is in English, and Chinese isn't mentioned. Other paid options aren't described. The page shows © 2026 Techartist and doesn't state an open-source license. The course mapping follows the creator's own description; AI Inspiration World hasn't checked the science figures lesson by lesson.

Based on the project page and the author's posts on X. Not tested by AI Inspiration World.