31. Gravitational Waves II: Interferometer Detection (General Relativity)

Lecture 31 on General Relativity. This lecture covers: (1) how interferometers use light to detect a gravitational wave; (2) the phase difference between light in the two interferometer arms; and (3) the expansion and contraction of the light’s wavelength. Lecture slides with corrections can be found at: https://physicsunsimplified.com/