A 'boom' of light that appears when a particle exceeds the speed of light set by a medium could, in other contexts, signal a kind of quantum instability that could trigger what's known as vacuum decay ...

Cherenkov light appears when a charged particle travels through matter faster than light can. This effect is the optical equivalent of a sonic boom, which occurs, for example, when a jet travels ...

Cherenkov radiation, the faint blue glow produced when charged particles exceed the phase velocity of light in a dielectric medium, has rapidly evolved from a fundamental physical phenomenon to a ...

The glow from faster-than-light particles gives us a unique way to explore the universe. Nothing can travel faster than light — in a vacuum. But when light slows down, sometimes matter can blaze past ...

Cherenkov light emission obtained over time during patient treatment, as captured in image and video by scientists at Dartmouth's Norris Cotton Cancer Center. Disclaimer: AAAS and EurekAlert! are not ...

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