this post was submitted on 21 Feb 2024
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I did not know that neutrons could penetrate farther than gamma rays by their virtue of being neutral. Also never heard gamma rays be called y-rays. Wonder what the z-rays will be if we ever name any.
γ is the Greek letter gamma. Those are γ-rays, not y-rays.
So why are X-rays the only ones that are just X if the rest are Greek
In an 1895 paper, Röntgen used "X" to label an unknown type of radiation. And the name stuck, despite his later objections. (Some languages do call them Röntgen rays.)
German for example does this.
Ix-Strahlung certainly doesn't roll off the tongue.
Here's a link with more details on the story