My brother in law and…

My brother in law and my sister worked on the Laser Interferometer Gravitational Wave Observatory (LIGO) project.  I finally found something that explains some of the theory behind this search for gravity waves as predicted by Einstein.  “Albert Einstein predicted the existence of these gravitational waves in his 1916 general theory of relativity, but only now in the 21st Century has technology advanced to enable their detection and study by science.”  The series is actually about the unified theory and string theory but there are some descriptions that even a mere mortal like me could understand.