A member of LIGO might be too close to tell what is the first gen. As a person without any connection to the field I see a paper making a distinction between t

A member of LIGO might be too close to tell what is the first gen. As a person without any connection to the field I see a paper making a distinction between the first generation of interferometric detectors and those using other means [0]. Likewise a couple of expanded papers from the ScienceDirect page on Gravitational Wave Detectors also cite non interferometric types as early work [1]: The earliest manmade gravitational wave detectors were based on a simple gedanken experiment: if two masses on a spring are momentarily stretched apart and then compressed by a gravitational wave, potential energy is imparted to the spring, independent of how coordinates are defined. from K. Riles, in Progress in Particle and Nuclear Physics, 2013. 0. https://s3.cern.ch/inspire-prod-files-2/2f1cb3e2779b8524c91c2554d8b9a055 https://s3.cern.ch/inspire-prod-files-2/2f1cb3e2779b8524c91c... 1. https://www.sciencedirect.com/topics/physics-and-astronomy/gravitational-wave-detectors https://www.sciencedirect.com/topics/physics-and-astronomy/g...