How a particle racing through a vacuum leaves a trail of blue light

May 8, 2019

How a particle racing through a vacuum leaves a trail of blue light

Posted by Xavier Rosseel in categories: particle physics, quantum physics

Thanks to a quirk of quantum theory, subatomic particles can emit light as they travel through a seemingly empty vacuum.

Blue-tinged Cherenkov radiation could help to illuminate quantum interactions between light and matter.

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