Health

Study links health risks to electromagnetic field exposure

A study of real-world exposure to non-ionizing radiation from magnetic fields in pregnant women found a significantly higher rate of miscarriage, providing new evidence regarding their potential health risks. The Kaiser Permanente ...

Medical research

Magnetic fields prevent editor from talking (w/ video)

(PhysOrg.com) -- By holding an electromagnet close to a person’s skull, researchers can alter the neuron activity in the person’s brain. This technique, called transcranial magnetic stimulation (TMS), can be used ...

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 ...

Medical research

Can humans sense the Earth's magnetism?

For migratory birds and sea turtles, the ability to sense the Earth's magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration. Humans, however, are widely assumed not to ...

Neuroscience

Study Shows Electrical Fields Influence Brain Activity

(PhysOrg.com) -- Most scientists have viewed electrical fields within the brain as the simple byproducts of neuronal activity. However, Yale scientists report in the July 15 issue of the journal Neuron that electrical fields ...

page 1 from 9

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.

This text uses material from Wikipedia, licensed under CC BY-SA