Magnetic resonance imaging (MRI) is a non-invasive biomedical imaging technique that uses a strong oscillating magnetic field to induce endogenous atoms such as hydrogen, or exogenously added ...

[Peter] has built an MRI machine that fits on a desktop ... and he figured visualizing magnetic fields would be cool. This led to what can only be described as a camera for magnetism instead ...

MRI Machines: Use powerful magnetic fields to scan inside the human body ... by aligning the needle with Earth’s magnetic poles. Shielding us from harmful solar radiation and cosmic particles.