Same with electricity

https://orau.org/health-physics-museum/collection/shoe-fitting-fluoroscope/index.html

The Shoe Fitting Fluoroscope.

Stick your feet in, do a real time x ray, see how … well your shoes fit.

According to Williams (1949), the machines generally employed a 50 kv X-ray tube operating at 3 to 8 milliamps. When you put your feet in a shoe fitting fluoroscope, you were effectively standing on top of the X-ray tube. The only “shielding” between your feet and the tube was a one mm thick aluminum filter.

Yeah… eventually phased or regulated out, due to … a bit much direct X Ray exposure.

I have actually seen one of these in person, at a museum.

It’d been deactivated, of course, partially gutted.

For a kind of related anecdote:

Multiple victims of either the Hiroshima/Nagasaki nuclear detonations, as well as US military personnel at various nuclear tests…

Described that, even with their eyes closed, in some cases, even with protective eye equipment on…

When the detonation occurs, people held their hands in front of their faces, with their eyes closed, and basically could see xrays of their own arms and hands.

… It basically doesn’t seem to have mattered what direction you are facing, if you are close enough to the detonation, for this effect to have been described.