Resonance

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.

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.

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

A measurement method that compares the phase of waves after they travel along different paths.

A clock that uses an atomic transition as a frequency reference.