Barry Barish (born January 27, 1936) is an American experimental physicist and Nobel Laureate. He is a Linde Professor of Physics, emeritus at California Institute of Technology. He is a leading expert on gravitational waves.
One consequence of Albert Einstein’s general theory of relativity is the existence of gravitational waves. Beginning in the 1970s the LIGO detector was developed to record gravitational waves. Barry Barish had a leading role in the project from 1994 and made crucial contributions to the development of the detector. In 2015 gravitational waves were detected for the first time.