Initializing, please wait a moment
Helioseismology Sun Oscillation 3D Explorer vs alternatives
Helioseismology Sun Oscillation 3D Explorer lets a reader see a simplified 3D model of the Sun's five-minute surface oscillation and toggle straight to the interior boundary it reveals - a SOHO/GONG/SDO-HMI data archive wins as the fixed, citable source for actual observational data; a textbook diagram wins for a quick static summary without needing WebGL.
| Option | Strength | Access | Trade-off |
|---|---|---|---|
| Helioseismology Sun Oscillation 3D Explorer (this page) | Interactive 3D visualization of the oscillation pattern and the interior boundary it reveals, with an amplitude slider and mode cycling | Free, in browser | Simplified pattern, not real observational data |
| SOHO / GONG / SDO-HMI data archive | The fixed, citable, official source for real helioseismic observations and inversions | Free, official science archives | Requires domain expertise to interpret; no interactive 3D model |
| Textbook diagram | Quick static summary of the technique, no WebGL needed | Reference texts | No animation, no adjustable amplitude or mode cycling |
Key published figures
| Figure | Value |
|---|---|
| Oscillation period | about 5 minutes (about 3 mHz) |
| Resonant modes tracked | millions, via SOHO / GONG / SDO-HMI |
| Measured convection-zone base | 0.713 +/- 0.001 solar radii |
| Tachocline location | about 0.69-0.72 solar radii |
Start with the step-by-step guide or when to use. Open the Helioseismology Sun Oscillation 3D Explorer.
FreetoolOnline editorial team
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.