Website · phet.colorado.edu
PhET
Virtual physics and chemistry experiments
About this service
Test your own hypothesis by changing a model’s parameters.
What you can do
- Interactive simulations
- Browse by subject
- Learning materials
Things to know
- Older simulations may require obsolete technologies; choose HTML5.
- Simulations on the website are free. A separate paid app offers the HTML5 simulations offline on iPhone and Android.
Address checked: Oct 27, 2026 · Verification source