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drhex t1_j12yvrl wrote

Some folks here suggested that a biological glow might be better for your fiction. I agree. There are not many real radioactive things that glow green like in the movies. But there are green glowing creatures (jellyfish and others).

Some real radioactive things glow blue - you can google "TRIGA reactor startup" to see some cool Cherenkov radiation light.

But there was an incident where someone managed to open a heavily shielded container of highly radioactive cesium-137 chloride. They said it glowed blue. It killed several people.

https://en.wikipedia.org/wiki/Goi%C3%A2nia_accident

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