Found something, they don’t mention these physicist sticking their head in the beam but this probably points to the origin of the story.
I’m not misremembering what my professor said, I even remembered the years (1930s) correctly. To quote him more accurately he said “a lot of early particle physicist damaged their vision because they would stick their head on a particle accelerator to check if they had a beam going” and then he proceeded to mimick the motion of dunking his head down bobbing his head back and forth pretending to intercept a beam with his temples.
Found something, they don’t mention these physicist sticking their head in the beam but this probably points to the origin of the story.
I’m not misremembering what my professor said, I even remembered the years (1930s) correctly. To quote him more accurately he said “a lot of early particle physicist damaged their vision because they would stick their head on a particle accelerator to check if they had a beam going” and then he proceeded to mimick the motion of dunking his head down bobbing his head back and forth pretending to intercept a beam with his temples.