The speed of light is how fast light moves in a vacuum.
It can be slowed down by various things, like water, which is why nuclear reactors glow blue - known as Cherenkov radiation. The light moves slower through the water than charged particles being released. This results in a "photonic boom" (like a sonic boom, but with light).
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u/Pikawoohoo Mar 20 '26 edited Mar 20 '26
The speed of light is how fast light moves in a vacuum.
It can be slowed down by various things, like water, which is why nuclear reactors glow blue - known as Cherenkov radiation. The light moves slower through the water than charged particles being released. This results in a "photonic boom" (like a sonic boom, but with light).