What is scintillation?

Scintillation is when light flashes on and off really fast, like a blinky toy.

Imagine you're playing with a flashlight in the dark. When you turn it on, the room lights up. When you turn it off, it goes back to dark. Now imagine that happens super fast, so fast you can't see your eyes moving, it looks like a flash of light instead of a slow switch.

That’s what scintillation is like! It's when something makes light flash quickly, just like the flashlight in your hand. Some things, like certain kinds of crystals or special materials, do this naturally when they're hit by tiny particles or energy, it’s like they’re saying “Hey, look at me!” with every blink.

Think of a crystal as a super bouncy ball. When something hits it (like a tiny particle), it makes the ball bounce around really fast inside. Each time it bounces, some light comes out, like when you squish a glow-in-the-dark sticker and it glows brighter.

So scintillation is just that, light flashing on and off because of all those quick bounces!