Project S.P.H.E.R.E.

Articles

• Loop-Induced Lorentz Violation and What Resonance Experiments Can Probe

  A 2025 QED analysis shows that Lorentz-violating parameters introduced in one sector of a theory can spread to other sectors through quantum corrections — and that resonance-based experiments may be sensitive enough to constrain those effects.

• New Funding Infrastructure Is Opening Doors for Independent Science

  Community-funded science pools are reaching scale in 2026, offering independent experimental projects new pathways to support that do not depend on institutional grant cycles.

• NIST Research on High-Frequency Acoustic Resonators and What It Means for Precision Measurement

  A 2026 NIST-led study on acoustic resonators above 100 GHz demonstrates a stacking approach that dramatically improves figure of merit — with implications for any experiment that depends on resonant frequency as a primary observable.

• Why a resonance measurement needs an uncertainty budget

  A practical guide to separating measured frequency changes from drift, calibration limits, and environmental effects in a proposed resonance experiment.

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

  Can recording and replaying a hollow copper sphere's resonance near 230 kHz change its natural frequency? Methods, controls and open questions.

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

  Proposed test design for a resonance shift: excitation-off baselines, sham and reference controls, blinding, MAC and persistence checks.

• 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.

• 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.

• 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.

• What a miniature clock network teaches SPHERE about timing

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