CAD hollow: cavity volume vs closed form (sphere)
The CAD kernel's hollowed-sphere volume matches the textbook formula to floating-point precision.
Single reading
1.49e-14 % relative error
Protocol
Test definition
Hollow a 20 mm diameter sphere with a 1 mm wall; compare kernel cavity volume 3053.628059289279 mm3 with 4/3*pi*9^3.
Limits
Limitations
- Geometry calculation, not physical measurement; one sealed inward-offset cavity; box case also exact (4032 mm3 = 8x18x28); no print.
Log
Recorded values
| Date | Value | Evidence | Samples | Source |
|---|---|---|---|---|
| 22 September 2026 | 1.49e-14 % relative error | CALCULATION | 1 | JARVIS_ADVANCED_SYSTEMS/docs/ledger/advanced-systems/step-hollow-live-20260922.json |
Source paths refer to the private JARVIS repository and runtime records. They are listed for audit and are not published.