Medical research

Can magnetic stem cells improve cartilage repair?

Cells equipped with superparamagnetic iron oxide nanoparticles (SPIOs) can be directed to a specific location by an external magnetic field, which is beneficial for tissue repair. Researchers have now taken the important ...

Health

Going for an MRI scan with tattoos?

Tattoos are increasingly popular. Every eighth person in Germany has already felt the sting of a tattoo needle. Yet, examining tattooed people via magnetic resonance imaging (MRI) could possibly be risky. The first prospective ...

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Magnetic field

Magnetic fields surround magnetic materials and electric currents and are detected by the force they exert on other magnetic materials and moving electric charges. The magnetic field, at a given point, is specified by both a direction and a magnitude (or strength); as such it is a vector field.

In special relativity, the electric field and magnetic field are two interrelated aspects of a single object, called the electromagnetic field. A pure electric field in one reference frame is observed as a combination of both an electric field and a magnetic field in a moving reference frame.

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