Definition
Plain language
A class of optical techniques where two light waves are combined and their interference pattern reveals information.
As stated in the literature
Measurement techniques exploiting wave superposition and phase relationships to extract structural or phase information from combined optical fields.
Also called: interferometric
Why it matters: It enables extraordinarily precise measurements of distance, phase, and structure that no single-beam method can match.
For example, gravitational-wave detectors split a laser into two beams, send them down long perpendicular arms, and read tiny shifts in the recombined interference pattern.
Heard on the show
“It's a standard interferometric move once you know what you're looking for, but the system designed it from the physics, not from a reference.”Episode 002 — An AI Ran a Real Optics Lab for 21 Hours and Found a Transformer-Shaped Pattern in Light