Science ❯ Physics ❯ Measurement Techniques

Precision Measurement

Spectroscopy Laser Spectroscopy Data Analysis Neutrino Mass Ordering Magnetic Moment Measurement Muon Decays

Thorium Nuclear Clock Sets 6,000x Gain in Sensitivity for Probing the Fine-Structure Constant

A Nature Communications study validates a thorium-229 nuclear transition as an ultra-sensitive tool to test whether alpha changes over time.

Caltech Chip OPO Delivers Coherent Multi‑Octave Frequency Comb at Femtojoule Energies