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10−1510^{-15}

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Lay all of it out in one table, rows for experiments and columns for the five components, and four columns get real entries: ηcl\eta_{cl} constrained at the 10^{-15} level by MICROSCOPE, η^diag\hat\eta_{diag} constrained by every dual-species and clock test in the list, η^coh\hat\eta_{coh} constrained at the low- 10^{-9} level by Rosi and colleagues’ internal-superposition test, η^sup\hat\eta_{sup} constrained by Overstreet and colleagues’ gravitational Aharonov-Bohm result. The fifth column, η^ent\hat\eta_{ent} , has nothing in it — not a weak bound, not a preliminary number, nothing. The paper’s proposition on this point is not merely that the entangled component happens to be unmeasured; it proves, within its…

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10−1510^{-15}

Equation 23 · Quantum Relativity

The Corner of the Equivalence Principle No Experiment Has Touched

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

Lay all of it out in one table, rows for experiments and columns for the five components, and four columns get real entries: ηcl\eta_{cl} constrained at the 10^{-15} level by MICROSCOPE, η^diag\hat\eta_{diag} constrained by every dual-species and clock test in the list, η^coh\hat\eta_{coh} constrained at the low- 10^{-9} level by Rosi and colleagues’ internal-superposition test, η^sup\hat\eta_{sup} constrained by Overstreet and colleagues’ gravitational Aharonov-Bohm result. The fifth column, η^ent\hat\eta_{ent} , has nothing in it — not a weak bound, not a preliminary number, nothing. The paper’s proposition on this point is not merely that the entangled component happens to be unmeasured; it proves, within its…

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10−1510^{-15}

Equation 5 · Technological Evolution

After Moore: The Adaptive Radiation of Compute

This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.

Measured against that floor, today’s mainstream logic is nowhere close, and the gap is large enough to state with confidence even given the uncertainty in any single measurement. The IRDS’s own 2023 logic-device electrical specifications table projects energy per switching event for a high-density logic cell at roughly 0.86 femtojoules in 2023, declining only to roughly 0.4 femtojoules by its 2037 projection even after the roadmap’s full projected run of gate-all-around and CFET architecture transitions [ 4 ] . A femtojoule is 10^{-15} joules; the Landauer bound at 300 kelvin is roughly 2.9×\times10^{-21} joules. Even the roadmap’s best-case 2037 projection is therefore still more than five…

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