Falstad Math and Physics Simulations
Ranked 3 of 4 physics simulators by recommenders
A free collection of interactive math and physics simulations that run in the browser, recommended for students and anyone who wants to explore wave and physics behavior visually.
A free collection of interactive math and physics simulations that run in the browser, recommended for students and anyone who wants to explore wave and physics behavior visually.
6 people gave an opinion
- recommend it
- 6
- criticize it
- 0
- approval share
- 100%
Recommended in 1 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 6 people recommend itNeeds 10 or more, not met.
- Nobody criticizes itNeeds 2 to 1 or better, met.
- Recommended in 1 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Useful resource for physics and engineering students
“this page of apps is a must-have resource for any Physics or Engineering student”
Comment from 17 Aug 2026 in “Falstad Math and Physics Simulations” Runs in browser as JavaScript
“Now he has converted everything to JavaScript for everyone to use.”
Comment from 16 Aug 2026 in “Falstad Math and Physics Simulations” Fond memories from high school use
“I have fond memories of fiddling with the wave simulations on this website during high school”
Comment from 16 Aug 2026 in “Falstad Math and Physics Simulations” Seen as cool and worth sharing
“this is so cool, thanks for sharing!”
Comment from 16 Aug 2026 in “Falstad Math and Physics Simulations”
Other physics simulators people recommend
The three most recommended other physics simulators, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Gravity solar system simulator | 23 | 7 | 77% | 6 | — | Approved |
| Interactive 3D three-body problem simulator | 20 | 5 | 80% | 3 | — | — |
| Falstad Math and Physics SimulationsThis page | 6 | 0 | 100% | 1 | — | — |
| Newton's Orchard | 5 | 0 | 100% | 2 | — | — |
What people said
4 of the 6 comments that mention it, newest first. Each links to the original comment.
“this page of apps is a must-have resource for any Physics or Engineering student”
“this is so cool, thanks for sharing!”
“I have fond memories of fiddling with the wave simulations on this website during high school”
“Now he has converted everything to JavaScript for everyone to use.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.