What’s that blue glow surrounding a reactor? It’s a phenomenon known as Cherenkov Radiation when electrically charged particles, such as protons or electrons, travel faster than light in a clear medium like water. | U.S. Department of Energy Office of Nuclear Energy

A demonstration of Cherenkov radiation imaging in a whole body #radiationtherapy patient at the American Association of Physicists in Medicine (AAPM) 2018 meeting. DoseOptics is hoping to file for FDA market clearance next year. This video shows radiation dose as it is delivered, based on the Cheronkov effect radiation glow emitted from the patient and picked up by highly sensative image intensifier cameras synched with the dose delivery. This patient receives two doses, one for the upper body a

We are often taught that nothing can travel faster than the speed of light. This is true in a vacuum (like space). The universal speed limit, c, is unbreakable. But in a material like water, light actually slows down. In water, light travels at about 75% of its vacuum speed. This creates a loophole for high-energy particles. In nuclear reactors, subatomic particles (like electrons) are often ejected at speeds that are incredibly fast—faster than the speed of light *in water* (though still slower

WATCH 👀 : Why do you see a blue glow inside of a reactor? The International Atomic Energy Agency (IAEA) explains… | U.S. Department of Energy Office of Nuclear Energy