Experiment 02 / GRAVITY INSIDE MATTER
Earth Tunnel
If a body crosses a planet through its center, which parts of the familiar oscillation come from gravity—and which from assumed inertia?
rotatable bitmap simulation / WebGL2
drag → rotate · wheel → zoom
A / TRACE
Read the trajectory underneath the image.
The video is generated from this state. It is never used as numerical authority.
Model trace
Run annotations
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B / METHOD
One assumption moved at a time.
Apparatus
The same center-crossing experiment is run against uniform and layered density models and then against explicitly counterfactual persistence rules.
Interpretation discipline
A model disagreement identifies a potentially discriminating experiment. It does not establish which ontology nature uses.
Presentation contract
The raw state, deterministic video, browser projection, animated GLB and OpenUSD scene are published together so presentation cannot silently replace computation.
C / RAW
Machine-readable run state.
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