Sentences with phrase «strength of a magnetic field»

«The possibility of a continued decay in the strength of the magnetic field is a societal concern that merits continued study and monitoring.»

Under those circumstances, he calculates that the maximum strength of a magnetic field would be 0.6?

The poles have never completely reversed since, but for the past 160 years, the strength of the magnetic field has been decreasing at an alarming rate.

If you provide energy in the form of radio waves, these tiny magnets can switch orientation and give off a resonance frequency that changes predictably based on the strength of the magnetic field.

By carefully controlling the composition of the droplets and the strength of the magnetic field, the forces applied by the droplet can be controlled, and the response of the surrounding tissue reveals its mechanical characteristics as well as the cues that cells are exposed to as the tissue grows.

The distance between certain lines in the spectrum reveals the strength of the magnetic field in that location — information that can't be measured directly otherwise.

Sideways Hall voltage increases in proportion to the strength of the magnetic field.

Electrical sensors measure both the angle and the force applied by the user on the ankle, and a computer modifies the strength of the magnetic field accordingly.

But researchers are just starting to create computer simulations of the strength of magnetic fields to understand how such weaker fields might arise.

It is still a magnetic field that is responsible for the fact that the polarisation is rotated, however, it is no longer the strength of the magnetic field that determines the strength of the effect, but the amount of electrons involved in the process, and this amount can be regulated simply by electrical potential.

The researchers were able to alter the rate at which they released the drops, and by changing the strength of the magnetic field they could also adjust the velocity of the drops.

A new instrument gave the team minute - by - minute updates on the strengths of magnetic fields in the spots.

«We do this by measuring the amount of weight being lifted and taking into account both the mass of particles in the lifter and the strength of the magnetic field being applied,» says Ben Evans, co-author of the paper and an associate professor of physics at Elon University.

This receptor seems to measure the strength of the magnetic field — the field is generally strongest at the poles — and the angle of the field in relation to the ground, which also varies with latitude.

The strength of a magnetic field drops off quickly, which is why fridge magnets don't fly across the kitchen.

The strength of the Hall potential also is proportional to the strength of the magnetic field applied to the metal strip, which is known as a Hall Probe.

Both of these parameters, the Hall potential and the strength of the magnetic field, can be measured by a Hall effect transducer or sensor.

When the radio waves stop, the nuclei relax back to their original state, giving off a radio signal at a frequency proportional to the strength of the magnetic field.

The frequency also correlates with the strength of the magnetic field; it is greater at lower altitudes where the magnetic field is stronger.

Moreover, the strength of the magnetic field is constantly changing — and is currently showing signs of significant weakening.

Measurements of the strength of the magnetic field along different directions in the lower solar atmosphere are now being made with the Vector Spectromagnetograph (VSM) instrument of the Synoptic Optical Long - term Investigations of the Sun (SOLIS) synoptic facility of NSO.

He first created plasmas on the Tokamak Fusion Test Reactor (TFTR) that significantly exceeded previous limits for a crucial factor called «beta» — the ratio of the pressure of the plasma to the strength of the magnetic field that confines it.

The next step towards solving the puzzle was to re-determine the strength of the magnetic field within the atomic nucleus: theoretical predictions are strongly dependent on this parameter, which must be determined experimentally.

This changed in the 1990s with Svensmark's cosmic theory in which changes in the Sun that trigger sunspots were related to changes in the strength of the magnetic field.

Not exact matches

The variation of the field strength is only a few percent of the applied magnetic field strength for now, but this is a significant first step to overcome the problem of detaching the plasma from the MN in the plasma thruster.

Although we know that the magnetic field originates in different parts of Earth and that each source generates magnetism of different strengths, exactly how it is generated and why it changes is not fully understood.

Rim Fares at the Paul Sabatier University in Toulouse, France, and colleagues, studied light from the star Tau Boötis to deduce the strength and orientation of its magnetic field.

Tarduno's new results are based on the record of magnetic field strength fixed within magnetite found within zircon crystals collected from the Jack Hills of Western Australia.

In order to put these relatively recent changes into historical perspective, Rochester researchers — led by John Tarduno, a professor and chair of EES — gathered data from sites in southern Africa, which is within the South Atlantic Anomaly, to compile a record of Earth's magnetic field strength over many centuries.

Pulsars, according to conventional theory, are neutron stars with immense magnetic fields — about a trillion times the strength of Earth's — that funnel hydrogen pulled from their red - giant neighbor continuously down onto their magnetic poles.

Ever since scientists generated the first global model of Earth's magnetic field nearly 180 years ago, its strength has decreased by some 10 percent.

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

The magnetic fields reinforce each other so as to maximise the strength of the overall field reaching the phone.

The laws of physics dictate that the particle speeds in this scenario will speed up when the magnetic field strength increases.

The changing magnetic field ensures that the rotor will never come to rest, and its strength — thousands of times more powerful than a typical refrigerator magnet — provides the necessary push to keep the train moving.

Eatough's team realised that the strong bursts of radio waves emitted by the pulsar would be rotated by the black hole's magnetic field, and so could be used to measure the strength of the field.

In some cases, they estimated, it could reach a thousand trillion times the strength of Earth's magnetic field.

To test the idea, they compared their measurements with the mathematical predictions of how powerful the increase in conductivity should be with increasing magnetic field strength.

It uses magnetic fields that are a fraction of the strength but at higher frequency than the electromagnetic fields used in TMS and ECT,» explained first author Dr. Michael Rohan.

An earlier survey of magnetic field strength revealed a prehistoric ditch.

He sketched the sunspot contours with scribble and crosshatch, intent mainly on mapping the locus (solar latitude and longitude) of each magnetic outburst and gauging the polarity and field strength (in gauss) of every sunspot.

«Elaa finds the Gibbs interface and measures the energy at that interface where it goes from many particles thick (at low magnetic field strengths) to nearly a single particle thick by changing the strength of the interaction,» she said.

Kharzeev has some other ideas: «The resistance of this material drops as the magnetic field strength increases, which could open up a completely different route toward achieving something like superconductivity — zero resistance,» he said.

He reasoned that lines of force were analogous to the paths followed by the molecules of a fluid and that the strength of the electric or magnetic field was analogous to the velocity of the fluid.

The US NOAA Space Weather Prediction Centre in Boulder, Colorado, says: «Although the magnetic field strength of this CME has been fairly high, it hasn't been of the orientation needed to cause strong geomagnetic storming.»

Constraints on the magnetic field strength of HAT - P - 7 b and other hot giant exoplanets.

The spectrum these teams measure during the eclipse won't translate immediately to a measurement of the strength or shape of the magnetic field.

Using a computer, they simulated how the DMI and external magnetic fields of varying strengths affected the modes and properties of the particles.

But in 2001, physicist Murray Holland suggested controversially that the fermions could be coaxed into pairing up at somewhat higher temperatures by subjecting them to magnetic fields of particular strengths.

Tarduno and his fellow - researchers believe they found the reason for the unusually low magnetic field strength in that region of the Southern Hemisphere.