Nuclear Magnetic Resonance is the ability of atomic nuclei to absorb radio waves in a magnetic field.
It leads to an imaging technique (ironically using TV frequencies) called NMRI, that can be used, like X-rays, to look inside the body. It's much better than X-rays for a lot of purposes, and it doesn't use dangerous radiation.
When it was introduced in a medical setting, it was found that people were very frightened by the term 'nuclear magnetic resonance imaging', and so it was changed to MRI, dropping the offending adjective.
On this basis, I have decided henceforth to adopt the superhero name Atomic Man, because I am made of atoms.
I have recently been accused of stunning honesty. That can be my superpower.
"Twelve Years Ago, I did not walk in a friendly game of cricket even though I was 90% confident that I'd got a feather touch on the ball while trying to pull. I have felt wretched about it ever since, and have never done anything like it again..."