About

sharelab tells school physics through interactive demos: drag a slider, poke the parameters, and watch the textbook formula actually run — projectile motion with drag, the chaotic double pendulum, a Doppler effect you can hear.

Every article follows one rule: the numbers are verified by independent computation before publishing. The recurring theme is the boundary case — the place where a familiar formula is still correct, but its range of validity is narrower than the way we memorised it.

In between are Creative Commons–licensed science articles republished from The Conversation, SciDev.Net, Global Voices and Mongabay, plus occasional notes from personal projects built with Claude Code. Most posts are in Vietnamese; every demo is plain Canvas with no external libraries, open source on GitHub.