The fast progress in improving the sensitivity of the gravitational-wave detectors. we all have witnessed in the recent years. has propelled the scientific community to the point at which quantum behavior of such immense measurement devices as kilometer-long interferometers starts to matter. The time when their sensitivity will be mainly limited by the quantum noise of light is around... https://www.alarecre.com/American-Flag-Color-Block-iPhone-14-Waterproof-Case-p12619/