Sentences with phrase «small magnetic fields of»

Not exact matches

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.»

«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.

«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.

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.

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

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 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.

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.

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.

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.

«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.

Using a rotating electric current that induces a magnetic field, computer data could be transferred to small particles of magnetic materials, with each particle aligned either up or down, representing a one or a zero.

Because the tiny bots contain such a small quantity and surface area of magnetic material, it takes a relatively strong magnetic field to move them.

«We found that the magnetic field direction is quite well preserved from large to small scales, implying that self - gravity and cloud turbulence are not able to significantly alter the field direction,» said lead author Hua - bai Li (The Chinese University of Hong Kong), who conducted the high - resolution observations while a post-doctoral fellow at the Harvard - Smithsonian Center for Astrophysics (CfA).

These pulses of electricity create a flickering magnetic field that passes over most objects, except the powered coil's mate (which can be made small enough to fit into consumer electronics).

«These data recover the well - known solar 5 - minute oscillation at a peak of 3 mHz (5.5 min) from the disk - averaged light with a radial - velocity amplitude of only 47 cm / s, an incredibly small velocity from a stellar point of view», says Prof. Strassmeier, PEPSI principal investigator and director of the Cosmic Magnetic Field branch at the Leibniz Institute for Astrophysics Potsdam (AIP).

A small fraction of the magnetic field comes from magnetised rocks in the upper lithosphere, which includes Earth's rigid crust and upper mantle.

Imagine being able to monitor the progress of an entire solar storm from the time it erupts from our sun until it sweeps past our small planet effecting enormous changes in our magnetic field.

Re 122 — also, if a magnetic pole where nearby, small movements could cause large directional changes in the horizontal component of the magnetic field, although the horizontal component should be quite small in that case.

«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.»

Particularly the findings that already small fluctuations in Earth's magnetic field elicit a behavioral response and the fact that «normal» magnetic conditions under which dogs express their orientation behavior occur only in about 30 % of all cases call for caution.

The concept uses a laser to heat fusion fuel contained in a small cylinder as it is compressed by the huge magnetic field of Sandia's massive Z accelerator.

Using LOS magnetograms, the authors observed a small region of transient polarity - reversed magnetic field in the main sunspot of NOAA 11429 on 13 March 2012, which corresponded with flare brightenings seen in intensity images.

There are two main theoretical models, one based on small magnetite particles that may reorient in an external magnetic field and the other based on the idea that upon photo excitation a certain type of molecules in the eye of a bird support a radical pair formed by two electrons which evolve under the joint action of the Zeeman interaction with the external magnetic field and the hyperfine interaction with the supporting molecule.

Originally proposed in a 2010 Sandia theoretical paper, the concept uses a laser to heat fusion fuel contained in a small cylinder (called a liner) as it is compressed by the huge magnetic field of Sandia's massive Z accelerator.

«Aurora [s] are very unlikely because (a) it's very unlikely there's a magnetic field to focus the charged particles into a small region of the atmosphere (necessary at other planets) and (b) the tenuous solar wind is likely deflected far [10s of Pluto radii] around Pluto,» Bagenal said in an email.

Gennady Fiksel, of the University of Rochester, and William Fox continued their previous research by adding a magnetic field by pulsing current through very small wires.

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.

Undulators, with small and low field bending, create a narrower radiation cone with more intense beam, with selected wavelengths or harmonics, which can be tuned by manipulating the magnetic field of the device by changing the gap.

Using high - intensity lasers at the University of Rochester's OMEGA EP Facility focused on targets smaller than a pencil's eraser, they conducted experiments to create colliding jets of plasma knotted by plasma filaments and self - generated magnetic fields.

We demonstrate, for the first time (a) magnetic sensitivity in dogs, (b) a measurable, predictable behavioral reaction upon natural magnetic field (MF) fluctuation in a mammal, and (c) high sensitivity to small changes in polarity, rather than in intensity, of the MF.

STAFF is capable of detecting rapid variations in magnetic fields, which means that very small spatial structures can be recognised within the plasma.

Large changes in cosmic rays are documented in response to magnetic - field variations (the Laschamp event of about 40,000 years ago is especially prominent) with no corresponding change in climate, so any cosmic - ray influence on the climate must be very small (a weak correlation can be obscured by noise; a strong control is almost always visible «by eye,» and clearly is absent).

That is precisely what I have done: Using annual sunspot number as a representative of the long term (on the decadal scale) solar magnetic field impact and small variable component of the Earth's magnetic field, as calculated from data by Jackson and Bloxam.

But we're approaching to the stage when the magnetic field of the sun is going to be very, very small.