Good Videos For You! 🎥 on Instagram: "​This video captures the powerful and mesmerizing moment of a nuclear reactor starting up for the very first time. As the reaction begins, a brilliant blue light illuminates the surrounding water. This phenomenon is known as Cherenkov radiation, which occurs when charged particles, such as electrons, travel through a dielectric medium at a speed greater than the phase velocity of light in that medium. ​The water serves both as a coolant and a biological shi