This is called cherenkov glow or radiation. It happens because a particle moves faster than light. But why is it blue exactly? Is it always blue? Idk

Doppler effect but for light.

fake news

Bernd told me I shouldn't go on the internet so often to help my mental health.

What are you cutting with? I'm trying to learn how to make videos for youtube, but for my purposes imovie will probably be enough for a while.

So cool!

 

Why do movies make it green, though?

... in given material. Speed of light in vacuum is different to speed of light in, say, water. This glow happens when a particle is moving faster than the speed of light in given material.

Which movie show this?

Simpsons for example.

I don't think this is cherenkov glow.

Still deda

I'm here.

Radium is green I think. Also there's tritium watches. Some radioactive material is actually blue tho or has a blue light.