Home▸Physics & Mechanics▸Cherenkov Radiation: The Sonic Boom of Light

💙 Cherenkov Radiation: The Sonic Boom of Light

Discover why charged particles racing through water or ice can outrun light itself (in that medium) and leave behind an eerie blue glow shaped exactly like the shockwave cone of a supersonic jet.

Physics & Mechanics3DModerate60 FPS💧 Water ❄️ Ice & Cold

The simulation shows a charged particle moving through a transparent medium, visualizing the spherical light wavelets it emits at each point along its path and how those wavelets pile up into a cone of Cherenkov light once the particle's speed exceeds the local speed of light in the medium.

🔬 What It Demonstrates

🎮 How to Use

Choose a medium to set its refractive index, drag the particle-speed slider to push beta past the Cherenkov threshold, and press play to watch the wavefront cone form and its half-angle change as you adjust the speed.

💡 Did You Know?

Cherenkov radiation is named after Soviet physicist Pavel Cherenkov, who first carefully characterized the effect in 1934 while investigating why gamma-irradiated liquids emitted a faint glow, work for which he shared the 1958 Nobel Prize in Physics with theorists Ilya Frank and Igor Tamm, who explained the effect mathematically.

⚙ Under the hood

Discover why charged particles racing through water or ice can outrun light itself (in that medium) and leave behind an eerie blue glow shaped exactly like the shockwave cone of a supersonic jet.

cherenkov radiationrefractive indexparticle physicsnuclear physicsphysicsoptics

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install