Status: proposal stage. No experiment results, community opinions, installed-hardware claims or production submissions. These additions do not amend the current draft LOC-1 protocol.

Where this fits

The project’s first experiment, LOC-1, compares a moved test sphere with a fixed reference. The pages here examine whether measuring several objects in the same time window would make that test more diagnostic, and what it would cost in calibration. They are proposals for review; the LOC-1 draft remains the reference design. For instruments and budget, see the equipment procurement plan and budget and transparency.

Same window. Shared clock. Separate controls.

S1Reference
S2A/B test
S3Comparator
S4Sham control
Proposed architecture: concurrent readout paths → calibrated common timing / DAQ → aligned observation windows → blinded analysis. A device count alone is not a synchronization specification.

The research pages

Research

Does Earth’s motion affect resonance measurements?

How Earth rotation, solar orbit, reference frames and local environmental changes inform a controlled copper-sphere resonance experiment.

Proposed amendment

Synchronized four-object frequency measurement protocol

A proposed four-object acquisition design with common clocking, aligned windows, channel swaps and blinded position trials.

Uncertainty

Frequency measurement error budget: timing, drift and false positives

Build an uncertainty budget for synchronized copper-sphere resonance measurements without mistaking calibration artifacts for discoveries.

Commentary

What a miniature clock network teaches SPHERE about synchronized measurements

Original commentary on a blinded optical-clock network study: common-mode rejection, gradients, covariance and limits of analogy.

Commentary

Earth rotation and resonator tests: what SPHERE can learn

Original commentary on rotating optical resonators, Earth rotation, orbital modulation and how to distinguish location from orientation.

Request for comment

Record-and-replay resonance: can playback retune a copper sphere?

Whether recording and replaying a hollow copper sphere’s resonance can change its natural frequency, what else could, and the questions we are putting to expert reviewers.

Test design

Verifying a resonance shift: the A/B/A excitation-off test

A proposed design for telling a lasting change in resonance from an apparent one: baselines, sham and reference controls, blinding and outcome rules.

Hardware guide

Hardware for synchronized resonance measurements

Illustrative laser vibrometer, DAQ and rubidium timebase hardware with a procurement checklist for a four-object experiment.

Community

Community review: how would you improve the experiment?

Public design-review prompts for synchronized resonance measurements, practical sensor experience and falsifiable tests.

Continue the design review

About this page. Original editorial text for Project S.P.H.E.R.E., added October 9, 2026. Sources are linked at the claims they support. Hypotheses are not findings. Draft additions do not amend the current draft LOC-1 protocol.