For ten points, name this effect similar to a sonic boom, in which charged particles passing through a medium at a speed greater than that of light produce visible light.
It was once thought to be similar to the light emitted by dyes exposed to light, but its namesake showed that it lacked gradual decrease in light. A similar effect is gamma rays having enough energy to pass light and make a visible cone. Explained by Frank and Tamm, it exists when high-energy radiation passes through transparent material. For ten points, name this effect similar to a sonic boom, in which charged particles passing through a medium at a speed greater than that of light produce visible light.
It was once thought to be similar to the light emitted by dyes exposed to light, but its namesake showed that it lacked gradual decrease in light.
{Cherenkov} Effect or Radiation