Sentences with phrase «small magnetic fields»

This sensitivity enables the NV - magnetoscope to detect very small magnetic fields — such as that produced by nano - and mesoscale magnetic materials, for example — by reading optical fluorescence emitted by the excited NV centers.

But they also found that even very small magnetic fields were enough to prevent thermal fluctuations from flipping electron spins.

Small magnetic fields generate a kind of turbulent friction that robs the gas and dust of some of its angular momentum, facilitating its infall.

These sensors can measure very small magnetic fields, enabling Wheeler to place the magnet and sensor farther from each other than was previously possible.

Current suppression in a small magnetic field can ultimately be traced back to the famous Pauli exclusion principle, the quantum mechanical principle that states that no two electrons (fermions) may have identical quantum numbers.

This is how the identification of smallest magnetic fields with diamond sensors works: in the tiny diamond tip, two adjacent carbon atoms are being removed and one of the resulting vacancies is replaced by a nitrogen atom.

These are able to characterize smallest magnetic fields with a spatial resolution in the nanometer range.

With the help of the electrons of the resulting nitrogen vacancy center, even smallest magnetic fields can be detected with a resolution of a few nanometers thanks to nuclear magnetic resonance (NMR) spectroscopy.

In certain magnetic materials, the electrical conductivity of a thin layer of material changes in steps as a small magnetic field is varied, increasing and decreasing in jumps of a certain size.

But how does this relatively small magnetic field at the galactic center come to encompass the whole galaxy?

«The origin of the magnetic field in this region is not understood, but it is likely that a smaller magnetic field is stretched out as the filaments are elongated by the gravitational influence of the black hole and stars in the Galactic center.»

After sweeping a very small magnetic field over the setup, the researchers found the Majorana particles» distinct quantized signal — the telltale fingerprint of a specific type of quantum particles — in the electrical traffic between the two materials.

The small magnetic field is induced by an interaction between the ionosphere and the solar wind, [13] rather than by an internal dynamo in the core like the one inside the Earth.

Not exact matches

MRIs work by tapping into an astonishing phenomenon: When placed in a powerful magnetic field, the hydrogen atoms in water molecules behave like small bar magnets.

Gubbins noticed that around 1770, an excursion — a small, localized reversal in the magnetic field — bloomed near the equator and began migrating south.

Some previous theoretical studies have suggested that the magnetic field of a neutron star should break into smaller loops and dissipate as the star ages — a phenomenon known as «turbulent cascade.»

Extending this lifetime offers insights into how small bodies generate magnetic fields, researchers...

That field, they say, would funnel hydrogen from a red giant toward a small spot at the neutron star's magnetic poles, just as in a normal pulsar.

«Our magnetometers (magnetic field sensors) are highly sensitive and can reliably measure even the smallest of changes in the ambient magnetic field,» explains Professor Uwe Hartmann.

When small, iron - rich particles are melted and then cooled, they record the presence of any magnetic field that may be present at the time.

If magnetic monopoles had relatively small masses, the particles would sap the strength of magnetars» magnetic fields.

«As the gas collides with the lunar surface, the cometary magnetic field becomes amplified and recorded in the small particles when they cool.»

«In contrast, the highly crystalline and uniformly flat 2 - D CGT, together with its small intrinsic anisotropy, allows small external magnetic fields to effectively engineer the anisotropy, enabling an unprecedented magnetic field control of ferromagnetic transition temperatures.»

In this plan, near - stationary protons would be dumped in the center of a small cyclotron and accelerated by magnetic fields in spirals until they reached the cyclotron's outer edge.

«Measuring small variations in the magnetic field of the soil enables you to identify old pits or embankments without destroying them.

With the new work, the blind mole rat joins the small league of animalsincluding birds, fish and turtlesthat uses an internal compass to read the earths magnetic field.

What they call «optical molasses» slows atoms to a crawl by focusing three pairs of laser beams on a small volume of space that also contains a magnetic field.

Likewise, on Mir and the International Space Station, they have largely been shielded by Earth's magnetic field (except in a small, quirky patch of orbit above Brazil known as the South Atlantic Anomaly).

The other two tell us that when a region of electric field spins in a small circle, it creates a magnetic field, and a spinning region of magnetic field creates an electric field.

The goal was to see if a mother ship microsatellite could launch smaller daughter ships, with all the satellites capable of sending magnetic field measurements to Earth.

«This process required measurements over several weeks, during which the fluctuations of the magnetic field applied had to be 10,000 times smaller than the magnetic field of the earth,» explained the study's primary author, Helmut Strobel.

Extending this lifetime offers insights into how small bodies generate magnetic fields, researchers report August 9 in Science Advances.

External forces beating up the ancient moon may explain how it once maintained a magnetic field for more than 400 million years — longer than scientists had thought such a small object could be magnetized.

Ignitor takes a different approach than ITER, using a much smaller and more compact tokamak (it's radius is 1.3 meters compared with ITER's 6.2 meters) and a much stronger magnetic field to compress the plasma.

But small planets and moons cool too quickly for a magnetic field to be maintained there by convection several billions of years after they form.

Scientists on that mission claimed to find protons — perhaps a small radiation belt trapped by Mercury's magnetic field.

«These include different types of MRI scans, which use strong magnetic fields and radio waves to produce detailed images of the inside of the brain, and Positron Emission Tomography (PET) scans, which use a small amount of a radioactive drug, or tracer, to test how tissues in the brain are actually functioning.

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.

The device uses small magnets placed inside the mouth and on the tongue to create a magnetic field.

The moon is too small for its core to have grown hot enough to churn and create a magnetic field, so researchers have attributed the magnetism to everything from asteroid impacts to measurement errors.

When subjected to an «eccentric magnetic field,» the spheres self - assembled and the smaller spheres, attached by virtual hinges, traced rough orbits to one side of their larger partners.

And Hall probes can be used to measure very small and slow fluctuations in a magnetic field, down to a hundredth of a gauss (the unit of measurement for magnetic field strength, named for mathematician Carl Friedrich Gauss).

A recent study detected the emergence of small - scale magnetic fields in the lower part of the sun's corona that may act as precursors to a flare.

Anything that nudges the spins of electrons that line up with the Earth's magnetic field will change the energy of those spins by a small amount.

Firstly, as the magnetic field does not allow very large molecular clouds to collapse and form stars, star formation can occur only after the clouds break up into smaller clouds.

The smaller star is the source of the magnetic field, and even though that field is about 1000 times stronger than the sun's, imaging it still required two arrays of radiotelescopes, plus two extra dishes, to detect the signals generated by magnetic fields.

Sea turtles can migrate across the ocean and back, but while Earth's magnetic field plays a role in their navigation, researchers have wondered what other tools turtles use to find safe harbor, particularly at smaller scales.

«The SMA's unique capability to measure polarization at high angular resolution allowed access to the magnetic fields at the smallest spatial scales,» said SMA director Ray Blundell (CfA).

«Seeing these small structures for the first time gives us the promise of studying the underlying physical mechanisms associated with magnetic fields on the sun,» says Scharmer.

«As stars form, magnetic fields influence regions big and small.»