# Differences between X-rays and Gamma rays

wonderingchicken
Some people said if it is originated from electrons then it is X-ray but if it is originated from the nucleus it is Gamma ray. But people can produced X-rays and Gamma rays by Bremsstrahlung process and in Bremsstrahlung process it is resulted from decelerating or braking electrons. So, Gamma rays produced via Bremsstrahlung are more similar to X-rays as it is produced by electrons. Why people still calling them Gamma rays although it is not generated from the nucleus?

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wonderingchicken, sophiecentaur and davenn
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The last time this got asked I discovered that some sources regard gamma rays as "anything produced from the nucleus" and x rays as "anything produced from the electrons beyond UV", while some sources do as @vanhees71 says and label anything above a certain frequency as gamma rays. I think the latter is more common, especially as we now understand clearly that it's all just EM and the source doesn't really make a difference. I'd presume whatever source you are reading about Bremsstrahlung is using that definition too.

Either way, it's just a label. It's all photons.

wonderingchicken, sophiecentaur and vanhees71