About this site

Vivid Explainer is a free public library of interactive explanations. Each site in the library explains one idea through figures you can operate. There are no ads and no sign-up.

How the science is checked§

Every computational model behind a figure is tested twice: by its author against worked examples, and by an independent test suite written from the published equations and reference values, without reading the model's code. Every factual claim is recorded in a claims register with its source and checked by a reviewer who did not write it. What each figure simplifies is stated next to the figure.

Found an error?§

Please open an issue on the source repository. Corrections are welcome and are credited.

Reuse§

Text and figures are licensed CC BY 4.0; code is MIT. Teachers may use and adapt any of it, with attribution.