“Vector Addition” is an educational simulation in HTML5, by PhET Interactive Simulations.
active 2023-08-21 → 2026-05-18 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 1002 days from 2023-08-21 to 2026-05-18. Pushes: 772 total, peak 36 in a day. Pull requests: 0 total, peak 0 in a day. Issues: 471 total, peak 28 in a day. Comments: 342 total, peak 16 in a day. Stars: 1 total, peak 1 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| pixelzoom | 1.2K | 611 | 0 | 233 |
| matthew-blackman | 99 | 4 | 0 | 40 |
| jonathanolson | 67 | 63 | 0 | 4 |
| samreid | 46 | 28 | 0 | 5 |
| vperezcadavid99 | 43 | 0 | 0 | 11 |
| Nancy-Salpepi | 35 | 0 | 0 | 11 |
| KatieWoe | 30 | 1 | 0 | 12 |
| phet-dev | 27 | 27 | 0 | 0 |
| zepumph | 26 | 26 | 0 | 0 |
| jessegreenberg | 22 | 11 | 0 | 8 |
| arouinfar | 10 | 0 | 0 | 5 |
| terracoda | 5 | 0 | 0 | 5 |
| Matthew-Moore240 | 4 | 0 | 0 | 2 |
| kathy-phet | 3 | 0 | 0 | 1 |
| oliver-phet | 1 | 0 | 0 | 1 |
Recent activity
Latest issues, pull requests and releases
- Issue comment#449KatieWoe2026-03-18 22:47Prevent "pile up" of object responses when moving a vector.
- Issue comment#449pixelzoom2026-03-18 22:14Prevent "pile up" of object responses when moving a vector.
- Issue#449pixelzoom2026-03-18 22:14Prevent "pile up" of object responses when moving a vector.
- Issue comment#447kathy-phet2026-03-02 23:36Relocate accessibleHelpText for radio buttons in Cartesian/Polar "Scene" radio button group.
- Issue#448pixelzoom2026-03-02 23:30Is "Scene" a meaningful user-facing description?
- Issue#448pixelzoom2026-03-02 23:30Is "Scene" a meaningful user-facing description?
- Issue comment#448pixelzoom2026-03-02 23:05Is "Scene" a meaningful user-facing description
- Issue comment#447terracoda2026-03-02 22:56Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#447pixelzoom2026-03-02 22:38Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#447pixelzoom2026-03-02 22:27Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#447terracoda2026-03-02 15:57Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#447pixelzoom2026-02-28 23:29Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#447pixelzoom2026-02-28 21:28Relocate accessibleHelpText for radio buttons in "Scene" radio button group.
- Issue comment#442jessegreenberg2026-01-12 23:18Alert reads out vector still on graph when another is returned to box
- Issue comment#326oliver-phet2026-01-06 21:58Notify translators after publishing 1.2
- Issue#445pixelzoom2026-01-05 20:54Unnecessary use of the word “Screen” in examples.md for Vector Addition: Equations
- Issue#446pixelzoom2026-01-02 22:25Interactive highlight without a vector selected in the vector toolbox
- Issue comment#446pixelzoom2026-01-02 22:25Interactive highlight without a vector selected in the vector toolbox
- Issue#446vperezcadavid992026-01-02 14:34Interactive highlight without a vector selected in the vector toolbox
- Issue#446vperezcadavid992026-01-02 14:34Interactive highlight without a vector selected in the vector toolbox
- Issue#446vperezcadavid992026-01-02 14:34Interactive highlight without a vector selected in the vector toolbox
- Issue comment#442pixelzoom2025-12-30 19:28Alert reads out vector still on graph when another is returned to box
- Issue comment#442pixelzoom2025-12-30 19:13Alert reads out vector still on graph when another is returned to box
- Issue comment#445vperezcadavid992025-12-29 18:25Unnecessary use of the word “Screen” in examples.md for Vector Addition: Equations
- Issue#445vperezcadavid992025-12-29 18:23Unnecessary use of the word “Screen” in examples.md for Vector Addition: Equations
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 1 stars here means stars gained during the window, not the repo's star count.