Because
they generate large magnetic fields they are an essential component in MRI scanners and levitating trains.
Not exact matches
On Earth, the brightest auroras (the high - altitude glows often called the northern and southern lights) are
generated when electrons in outer space near Earth are accelerated by
large electrical potentials, or voltages, along the lines in our planet's
magnetic field and slam into gas molecules in the upper atmosphere above polar regions.
Together with Eric Blackman, an astrophysicist at the University of Rochester, and Michael Watkeys, a geologist at the University of KwaZulu - Natal in South Africa, Tarduno hypothesizes that the region — which is referred to as a
Large Low Shear Velocity Province (LLSVP)-- affects the direction of the churning liquid iron that
generates Earth's
magnetic field.
Although dynamos are thought to require
large planetary cores, it's possible that the molten cores of these small bodies may have churned vigorously enough to
generate magnetic fields, he says.
This same motion also helps to
generate our planet's powerful
magnetic field, which protects
large life forms like humans from deadly cosmic radiation.
They found that the nanowires should
generate a
magnetic field as an electrical current passes through the atoms, just as
larger conductive coils, known as solenoids, do.
These amazing outflows traverse distances
larger than galaxies» 35 and are powered by the gigantic
magnetic field generated by the spinning disk of matter spiraling in toward the event horizon.
This governs the nature of the dynamo that
generates magnetic field in the stellar interior and determines the observed
large - scale
magnetic structure.
NASA, Chandra X-Ray Observatory — ring and
larger images (more)
Magnetic field interactions between giant stars Aa and Ab are thought to energize the corona of the
larger star (Aa),
generating more x-rays than would be expected for a single star (more) and creating an x-ray luminosity that is 10,000 times that of the Solar corona.