A place to learn physics
Lessons, practice problems and tools, for high school and college students and anyone else learning physics. It's a work in progress: lessons and tools are added as time allows, so some units are still empty.
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Learn
Lessons, unit by unit. Each one teaches one thing and checks your answers as you go.
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Practice
Problems to work: by lesson, in problem sets, and as challenge problems, with answers checked and worked solutions.
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Tools
Editors, simulators and lab tools that run in the browser.
Computational tools · Digital logic · Simulations