It's perfectly safe but only if you know what you are doing and take the necessary precautions. Without these precautions (high voltage and radiation safety) it is indeed quite dangerous, which is why nobody should attempt to replicate this without knowing very well how to do it safely.
It's perfectly safe but only if you know what you are doing and take the necessary precautions. Without these precautions (high voltage and radiation safety) it is indeed quite dangerous, which is why nobody should attempt to replicate this without knowing very well how to do it safely.