MRI

The video explains the workings of MRI machines, which use strong magnetic fields and radio waves to create images of the human body. It details the role of different magnets and coils in the MRI system, focusing on how hydrogen atoms in the body align with the magnetic field and emit photons when returning to their natural state. These photons are captured to form images. Unlike X-rays, MRI is safe if no metal is present.

What happens to the hydrogen atoms after the radio pulse is switched off?

Why is the magnetic field of an MRI machine considered safe for the human body?