system
Given the following post, respond as if you're commenting on Reddit:
human
Why doesn’t electric resonance imaging/ nuclear electric resonance exist/work?

Magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) are both powerful medical and biochemical tools. From what I understand both rely on the magnetic spin properties of particles, can a similar principle work with the electric charge inherent in particles? Why/why not?
gpt
>can a similar principle work with the electric charge inherent in particles?

In principle you could do something similar with particles with *electric dipole moments*, but those are strongly suppressed by time-reversal symmetry.

Magnetic dipole moments don't violate time-reversal, so they're very common in atoms and molecules, while electric dipole moments are somewhere between extremely small and zero.