Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For First Responders · State Observer

State Observer for a textbook problem

Built for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field. Simulate a textbook problem live below — adjust the inputs and watch it respond, right in your browser.

This simulation is being prepared.

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Also for:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students General version →

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Frequently asked questions

Is this good for first responders?: Yes — this version of "State Observer for a textbook problem" is framed for first responders planning or training for real incidents. Run fast what-if scenarios for response planning and training — no software to install in the field.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.