Alfred Pérot

Alfred Pérot was a French physicist known for inventing the interferometer, a device that uses the principle of light wave interference to measure extremely small distances and differences in optical path lengths. His most famous contribution, the Fabry-Pérot interferometer (developed with Charles Fabry), enhances the ability to analyze light spectra with high precision. This tool is widely used in fields like spectroscopy, astrophysics, and telecommunications to study light properties and detect tiny variations, helping scientists explore atomic structures and cosmic phenomena.