How To Use Magnetic field In A Sentence
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The changing magnetic fields create an electrical current.
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The technique uses a magnetic field which causes old, faulty or infected cells to cluster together and self-destruct.
The Sun
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Hale also gained prominence as an astronomer with his invention of the spectroheliograph and the discovery of magnetic fields in sunspots.
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Areas on the surface of the Sun called coronal holes, where the magnetic field is quite open and highly energetic charged particles stream out and hit the earth's magnetic field and interact with it.
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Scientists believe the magnetic field is generated deep inside the Earth where the heat of the planet's solid inner core churns a liquid outer core of iron and nickel.
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Because an electric as well as a magnetic field is involved, the term speed of light.
Citizendium, the Citizens' Compendium - Recent changes [en]
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They can exercise a subtle, unseen influence, somewhat like a magnetic field or centripetal force, compelling us inexorably back on ourselves.
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New stellarators beat the confinement problem by creating a quasi-symmetric field - trading fiendishly complex magnetic fields for fiendishly complex magnets.
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Today Science tells us the speed of light is decaying, the magnetic field is collapsing, the earth is slowly beginning to wobble on its axis, the protective ozone layer is thinning.
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Changing levels of current in the wires of an electric coil wrapped around a magnetic generate fluctuations in the magnetic field.
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Mumma pulled up a map that showed where methane had been found and where the Mars Global Surveyor, a spacecraft that orbited Mars from 1997 to 2006, found the weak remnants of what had once been a strong magnetic field.
First Contact
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The magnetic field sensitivity data are obtained by recording the response of the magnetometer for about 40s, performing a fast Fourier transform (FFT).
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This was expected to be a clue to changes in stellar magnetic fields.
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An intricate system of magnetic fields propelled the craft along and away from Earth.
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Although most optical light is unpolarized – consisting of light with an equal mix of all polarizations – the extreme bending of energetic particles around a magnetic field line can polarize light.
World-wide Campaign Sheds New Light on Nature's "LHC" | Universe Today
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Compared with electromagnetic braking (EMBr) ruler, the brake effect of the the jet–pattern magnetic field on the flow discharged from the nozzle and the flow at the meniscus are the better.
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The atmosphere was thicker and the protective magnetic field was switched on.
Times, Sunday Times
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CCM - 4 - magnetometer to measure the magnetic field is the vertical component of the fluxgate magnetometer.
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But electromagnetic fields can bend them, to form images.
The Harper Dictionary of Science in Everyday Language
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We derive an accurate and analytical expression for electromagnetic fields of a vertical magnetic dipole over an anisotropic uniaxial medium half-space.
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MRI scanners use magnetic fields which need helium gas to keep them to almost absolutely zero temperatures.
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The magnetic field sensitivity data are obtained by recording the response of the magnetometer for about 40s, performing a fast Fourier transform (FFT).
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An example is periodic motion, such as the precession of a particle with intrinsic spin and magnetic moment in a constant magnetic field.
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This gear rotates coils of wire within a magnetic field inside the generator, creating electricity.
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These devices are substantially attracted to the static magnetic field of magnetic resonance systems and, therefore, may be uncomfortable or injurious to a patient undergoing an MRI procedure.
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Magnetic parameters measurement technology refers to magnetic field strength measurement and magnetic flux measurement.
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Electrical and magnetic fields can induce currents that might alter the voltages across cell membranes.
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The radio waves, magnetic field and computer technology combine to produce vivid images of the body's soft tissue.
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Only a few substances can be subjected to a magnetic field and remain magnetised.
The Sun
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Until recently geophysicists thought that at this low point the magnetic field would also go haywire.
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Like tokamaks, their currently more advanced cousins, stellarators use magnetic fields to confine plasma in a torus for fusion reactions.
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These are induced by the electromagnetic field from the battery wire.
The Harper Dictionary of Science in Everyday Language
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This means that the electrical resistance of the device can be changed dramatically using a very small magnetic field.
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Similarly, superconductivity can be destroyed by applying a magnetic field that exceeds some critical value.
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And how does its intense magnetic field shape its environment, including the aurorae and those lethal radiation belts?
Spacewatch: Juno to Jupiter
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Like a lighthouse beacon, this magnetic field has guided ocean voyagers for hundreds of years.
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Many everyday objects, including water and wood, are weakly diamagnetic - that is, they're repelled by magnetic fields.
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Birds may use celestial bodies or the Earth's magnetic field to steer their way but they also depend on major topographical features to aid in navigation.
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That is that it is attracted by the magnetic field but does not remain magnetic once it leaves the field.
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Not surprisingly these force patterns resemble the pattern of magnetic field lines across the aperture of a quadrupole magnet.
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When the burst of electrical current ends the magnetic field reverses polarity.
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Not surprisingly these force patterns resemble the pattern of magnetic field lines across the aperture of a quadrupole magnet.
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It is possible to lose the permanent magnetic field (remanence of the iron), which disables the machine from self-starting.
1. Synchronous generator
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The main specific of the machines lies in that the pole centers are not alined with the axes of the fundamental wave of the magnetic fields.
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These currents are induced by the rapidly changing magnetic field generated by a coil supplied with an alternating current.
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Traveling up to a thousand miles per second, they fly through space and are deflected by planetary magnetic fields.
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For example, magnetic fields could be added to global simulations of solar convection to address the operation of the dynamo that drives the sunspot cycle.
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According to Faraday's laws of electromagnetic induction, a changing magnetic field can induce electric current to flow in any conductive structure nearby.
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The result of that infall was the generation of a rotating magnetic field of tremendous strength.
On the Spot at BSC – Thomas Harlan interview
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The force of magnetism, or magnetic field, is much stronger at the magnet poles than around the equator.
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Nanoscale magnetic resonance imaging is achieved by manipulating the hydrogen nuclei in the sample with a radiofrequency magnetic field generated by a \ "microwire\" (red).
PhysOrg.com - latest science and technology news stories
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The researchers relied on the ability of the material to repel a magnetic field, a trademark of superconductors.
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The resulting torrent of charged particles emanating from the sun arrived days later at the outer limits of Earth's atmosphere where it interacted with Earth's magnetic field, causing a geomagnetic storm and creating spectacular auroras.
Space weather: Are we ready for a solar strike?
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Measurements taken from these stations help to get a global picture of the magnetic field.
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However the behavioral deficit totally disappeared by adding an extremely lower frequency ( ELF ) noise magnetic field ( rms: 10μ T ).
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The circuitry in this fighter aircraft has been protected against strong magnetic fields.
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The effects that electric and magnetic fields have on matter almost always dwarf the effects of gravity.
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She hated do-gooders, those she called the goody-goodies, but her own goodness surrounded her like a tangible, and visible magnetic field.
The Satan Bug
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In this technique, the vibrations of electromagnetic fields are transferred to the motions of electrons in a gas of atoms.
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For example, at each location on the globe, the geomagnetic field lines intersect the Earth's surface at a specific angle of inclination.
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Because the string is magnetized, the magnetic field surrounding it will also vibrate with the string.
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During braking, the metal wheels are exposed to a magnetic field from an electromagnet, generating eddy currents in the wheels.
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The vertical component of terrestrial magnetic field can be got with the vertical current.
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Their origin is not yet completely understood, although they are certainly related to convolutions of the intense solar magnetic field.
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To observe the constant rotating magnetic field treatment of rib fracture pain after the clinical efficacy, to explore the mechanism of constant rotating magnetic field.
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The machine will make quite a loud noise, which will probably vary in pitch and volume during the scan, but the magnetic field cannot be felt.
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Transformation of electromagnetic field is derived from lorentz force formula andmagnetic field of moving charge.
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The vertical component of terrestrial magnetic field can be got with the vertical current.
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Lead, not being a ferromagnetic material, cannot shield or shunt magnetic fields in this way.
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Researchers say their study could provide fresh clues to explain biomagnetism – a phenomenon in which some birds, insects and marine life navigate using the magnetic field that encompasses the Earth.
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Because nanoscale superconductors don't repel magnetic fields, they could prove useful in a variety of superconducting applications.
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The suit means electromagnetic fields bounce off her.
The Sun
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Short bursts of electrical current are send through a coil of wire, causing a magnetic field.
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A meteorite collided with Earth at the same time, delivering a one-two punch to the magnetic field.
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Many uses for magnetic fields have been suggested but laid aside because of the high cost of cryogenics.
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More strikingly, it demonstrated that a toroidal discharge in a toroidal magnetic field established its own stable configuration.
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Many have been made chronically ill because of intolerance to wi-fi and other electromagnetic fields and have moved to the tiny outpost on purpose.
The Sun
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The new data suggests, however, that the interstellar magnetic field slips around the heliosphere and the outer shell, called the heliosheath, leaving the spherical shape of the heliosphere intact.
Cassini/IBEX Data Changes View of Heliosphere Shape | Universe Today
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You effectively have a tiny current going around, and when you have a current like that you have a magnetic field - the electron becomes a tiny magnet.
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In a magnetic field, a moving charged particle is deflected from the straight path along which it was travelling.
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Earth has an actively convecting dense metallic core that produces and sustains a strong magnetic field.
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The TR-107 Tricorder Mark 1 (Vital Technologies; 905-9511219; $398) combines an electromagnetic field sensor, temperature and pressure meters, a colorimeter and enough blinking lights to bring a smile to any Trekker's face.
Tri This
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The characteristics of optical fibre change with temperature, sufficiently to change the required magnetic field period.
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The secondary current sets up a magnetic field inside the tube.
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Venus Express will be positioned to map the background magnetic field in the region, to track how the solar plasma interacts with the atmosphere.
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I've been told by several people privy to Russian space primate studies that indicate that without at least 1/4 gee and 0.2 gauss magnetic field levels, the human body will NOT survive more than a year and that human conception may be impossible without these minimum stimuli.
Dennis Wingo - Why Space? Why Now? - NASA Watch
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A circuit amplifies the signals to give them the proper frequency weighting, and the network combines the outputs nonlinearly to approximate the true magnitude of ambient magnetic fields impacting the body.
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When a current flows through a wire a circular magnetic field is created around it.
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For further understanding of the energy in a magnetic field, you may want to study magnetic fields in solenoids.
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I know a place where the magnetic fields would rip you apart, atom by atom: the surface of a neutron star, a magnetar.
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The improvement of the original 1.2m cyclotron to enhance its accelerated particles-energies with increasing main magnet exciting current and reshimming the magnetic field is described.
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The vertical defocusing arising from the increase of the average magnetic field with radius is compensated by the vertical focusing due to the azimuthal variation of the field.
Accelerators and Nobel Laureates
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This eruption may cause auroral displays and magnetic storm activity when it impacts the Earth's magnetic field sometime Friday.
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Both represent the quantized field of a fundamental force: photons the electromagnetic field and gravitons the gravitational field.
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This time there will be one major difference, though: even if the Sun will once again be close to a minimum in activity, its magnetic field polarity will be opposite to that during the first polar pass.
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Thus, the induced voltage in the coil generated by any outer magnetic field is controlled to reduce noise.
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A phenomenon called self-induction is at work here: as the current oscillates, the magnetic field around the wire changes, too, inducing voltages that slow the oscillation.
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This is not to say that these termites have no perception of the earth's magnetic field.
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Its magnetic field grows very intense as well, to a trillion gauss or so.
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Migratory birds unerringly cross countries, continents, and even oceans by using magnetic fields to navigate.
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They found that in a magnetic field, the doped indium antimonide, a solid-state plasma, transmitted circularly polarized waves that interfered with each other.
PhysOrg.com - latest science and technology news stories
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Parker also showed how the solar wind would carry the solar magnetic field into interplanetary space.
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Pigeons navigate less accurately when the earth's magnetic field is disturbed.
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This method is sometimes called electrodermal testing, and claims to diagnose food intolerances by measuring changes in your 'electromagnetic field' with a galvanometer or computer.
Autism Hub
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Electrophysiological recordings from the optic tectum of the pigeon and the Bobolink revealed the presence of neurons that respond to changes in the direction of the ambient magnetic field, but only in the presence of light.
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[AS] – Yes, and the polarizer is the magnetic field?
Albert Fert - Interview
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(lower orbit) * period: from mid-March 2009 to late April* operation: 50 km circular orbit* mission: acquisition of the magnetic field of lunar surface using magnetometer and plasma observation system.
Spaceports
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Pigeons navigate less accurately when the earth's magnetic field is disturbed.
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This, for instance, is how we ordinarily think of the magnetic field of an electromagnet, which is sustained only so long as an electric current passes through the magnet's coils.
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What is the source of the invisible magnetic field that pulls the needle of practice always toward north?
The Constraints of Corporate Tradition
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This paper analyzes the formation of the output wave from a dynamic detector, the relation between the output wave and the magnetic field distribution and the effect of the armature reaction on them.
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Usually if your screen develops hot spots and tinged colour, it is probably due to the build-up of stray magnetic fields in your monitor.
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Some materials, called diamagnetic, tend to become magnetized in a direction opposite to the magnetic field being applied to them.
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Magnetic fields, which are produced by the dynamo effect caused by spinning liquid iron, such as the core of a planet, are found throughout the universe.
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The source of the alternation is the generator in which the voltage (and following it naturally the current) are induced in stationary coils by a rotating magnetic field.
Yahoo! Answers: Latest Questions
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When a paramagnetic material is placed in a strong magnetic field, it becomes a magnet, and as long as the strong magnetic field is present, it will attract and repel other magnets in the usual way.
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The roads are magnetic as well and the floater rides on the opposing magnetic fields.
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rates rate of change in star rotation rate star magnetic field variability stellar wind strength and variability short period variation in parent star diameter star's carbon to oxygen ratio star's space velocity relative to Local Standard of Rest star's short term luminosity variability star's long term luminosity variability amplitude and duration of star spot cycle number
Reasons To Believe -
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If the magnetic field is fixed, the time evolution of the entanglement is periodic and is a sinusoidal function.
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It is found that the vibrating electromagnetic field can obviously reduce the depth of shrink hole.
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Frequencies of hundreds of megahertz were selected with a resolution of just a few hertz, while the magnetic field had to be homogeneous to within one part in a billion.
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Because earthly magnetic field has the character that attracts iron, cobaltic , nickel, human body contains this 3 elements likewise.
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Some of the angrite meteorites in this study formed just 3 million years after the birth of the solar system itself, 4,568 million years ago, and show signs that their parent body had a magnetic field that was 20 to 40 percent as strong as Earth's today.
YubaNet.com
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Inducing magnetic fields into body tissue causes bioelectric current activity, which may assist in the normalizing of the electron flow in the body.
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The magnetometer picks up any changes in the magnetic field created by disturbances in the soil, such as a trench filled in with soil.
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We don't see the electromagnetic field giving up energy to matter in a continuous stream, but rather in little lumps that behave like uncharged particles that lack rest mass.
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According to that explanation, known as the diffusive shock acceleration mechanism, clouds of charged gas rush outward during a supernova and generate strong magnetic fields.
Wired Top Stories
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Naturally occurring variations in the Earth's magnetic field induce eddy currents in the Earth that are detectable as electric field variations on the surface.
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The radio waves, magnetic field and computer technology combine to produce vivid images of the body's soft tissue.
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Permanent magnetic field focusing has proved to be a useful method of focusing in present-day microwave tube , and is one of the important compose of electronic optics of the microwave tube.
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Earth's atmosphere and its magnetic field manage to block most of the radiation from solar flares.
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Stone flakes and stegodon bones have been found here in presumed association in deposits located just above a reversal of the earth's magnetic field dating to 730,000 years ago.
Ancient Seafarers
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Barron showed theoretically that a magnetic field alone cannot produce an enantiomeric excess, and at the time called magnetic optical activity ‘false chirality’.
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A capacitive proximity switch works with a high frequency oscillating circuit that creates an electromagnetic field on the active sensor surface by means of a capacitor.
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If a pot made from a magnetic material—cast iron, steel, stainless steel of the proper crystal structure ferritic—is placed near the coil, then the alternating magnetic field induces an alternating electrical current in the pot.
On Food and Cooking, The Science and Lore of the Kitchen
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Investigation of the effect of magnetic fields on the entropies of paramagnetic substances led to the invention of the adiabatic demagnetization method of producing temperatures considerably below 1° absolute.
William F. Giauque - Biography
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The use of an electrometer or galvanoscope for sensing magnetic field or electric fields are well known.
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The flow of a magnetic field is taken from magnetic north pole to magnetic south pole.
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Even Luna 1 carried a magnetometer and found that the Moon produces no significant magnetic field, quite unlike Earth.
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My favorite in this category is magnetohydrodynamics, which is the study of plasmas and their interplay with electromagnetic fields.
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This structure presents positive and negative magnetising orientations at the surface of the microwire when this is subjected to a magnetic field, i.e. the microwire becomes magnetised.
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Depending on the orientation of the magnetic field carried by the CME cloud, it may cause a magnetic storm when it impacts the Earth's own magnetic field.
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Likewise, a wire loop being pushed into a magnetic field will induce a current which will make it difficult to continue pushing.
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At this time the Yohkoh images showed faint X-ray emission from a large closed magnetic field structure above the prominence.
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A well-balanced SQUID gradiometer operating in the geomagnetic field can achieve a common mode rejection of up to 10.
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The MRI scanner uses a strong magnetic field to align hydrogen atoms in the body.
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A display device superimposes the scan magnetic field image on a scan laser microphotograph on a screen, so it is possible to perform defect inspection on the semiconductor device chip.
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Scientists who chase dust devils report that the tiny twisters can produce a small magnetic field that changes magnitude between 3 and 30 times per second.
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Earth has an actively convecting dense metallic core that produces and sustains a strong magnetic field.
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The solenoid is a large magnet, generating a 4 Telsa magnetic field (100,000 times stronger than the Earth’s magnetic field) with a total stored energy of 2.66 GigaJoules (equivalent to half a tonne of TNT), and is responsible for our ability to observe tracks and measure the energy of charged particles.
LHC Detector Performs First Test of Fundamental Forces
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Simple physics principles might explain the mysterious magnetic fields that seem to permeate the cosmos.
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You don't have to worry about magnetic fields, mechanical shock, spontaneous bit-rot or anything else.
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The Magnetic Fields 'eighth album, in stores today, begins with a howling, surfy stormer of a song, its title and only lyrics, "Three-way!" repeated three times in three minutes, accompanying a fantastically distant piano roll fit neatly behind a twanging guitar line.
Magnetic Personality Disorder
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A woofer is the electro dynamic driver which uses a cone, surrounded by a magnetic field, and a voice coil to drive.
ReadABlog.com New Blogs and RSS Feeds
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Some people are worried that electromagnetic fields from electric power lines could increase the risk of cancer.
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It is linked to the magnetic field of the transmitted wave - not the turns of the coil.
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But our theory tells us that if we made the vessel larger, we could produce the magnetohydrodynamic effects with a smaller magnetic field; the magnetic force required would decline in proportion to the increase in size of the vessel.
Spacecraft Detects Mysterious "Ribbon" at Edge of Solar System | Universe Today
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Our relatively puny magnetic field holds the Solar Wind at bay, at the magnetopause, a distance of 60,000 km from Earth.
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Iron might not have melted and sunk to form the liquid core, and the magnetic field would never have developed.
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All this occurs in magnetic fields very much above the maximum tolerated by the superconducting state.
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Were the magnetic field to be found, Newtonians would celebrate a sensational victory.
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Others might come up with reasons like the earth's magnetic field, or meteorological patterns, or terrain contours.
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But in magnets, like a compass needle, more of the domains are lined up in the same direction, and so the material has an overall magnetic field.
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This was expected to be a clue to changes in stellar magnetic fields.
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Electricity is produced when coils of wire inside the generator create a pulse as they move through a magnetic field, Sagrillo said.
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The electromagnetic field can also affect other things near by.
Times, Sunday Times
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We have crept up on a partial definition of radio: It has something to do with electromagnetic fields.
The Harper Dictionary of Science in Everyday Language
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The Magnetic Fields 'eighth album, in stores today, begins with a howling, surfy stormer of a song, its title and only lyrics, "Three-way!" repeated three times in three minutes, accompanying a fantastically distant piano roll fit neatly behind a twanging guitar line.
Magnetic Personality Disorder
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Although these ultrahigh-energy cosmic rays are relatively rare, they are deflected less by magnetic fields.
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Ferroelectric materials can create an electric field the way iron magnets create a magnetic field.
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The method involves revving up regions of the brain with gentle electrical or magnetic fields.
Times, Sunday Times
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As plasma is a mixture of positive and negative particles, magnetic fields may be used to contain it and prevent the particles hitting the wall of the containing vacuum vessel.
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Maxwell's Equations, the divergence of the magnetic field is zero, and "solenoid" is a traditional term for an electromagnet.
Conservapedia - Recent changes [en]
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Scientists surmise this allows the bacteria to orient themselves relative to Earth's magnetic field to guide their movement to desirable locations.
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This remarkable device consists of a torus of alternating magnetic materials that are chosen so that the torus has a huge net spin - 10 22 aligned electron spins - yet produces no magnetic field.
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The gas giant Saturn is surrounded by a large, protective layer of magnetic fields, called a magnetosphere, which protects its surface from the effects of solar flares and cosmic rays.
Softpedia News - Global
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The virtual particle can interact with the magnetic field and affect the moment of the muon.
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High exposure to electromagnetic fields has been linked to a range of health issues including an increased risk of cancer and memory problems.
Times, Sunday Times
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The formulae of force and moment of force acted by an arbitrary coil in non-uniform magnetic field are deduced with Feynman's model.
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Yet, anyone who played with magnets as a child has felt how magnetic fields of like polarities repel each other.
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Recently, helicity study in solar magnetic fields become active, because of great progress of observations and data processing.
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The virtual particle can interact with the magnetic field and affect the moment of the muon.
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A magnetic heat shield would use a superconductive magnetic coil to create a very strong magnetic field near the leading edge of the vehicle.
The Next Generation of Heat Shield: Magnetic | Universe Today
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Concern is thus not only for the 'neurotoxic' aspect of mercury in fillings, an increasingly understood hazard, but because fillings themselves act as antennas in the presence of electromagnetic fields from cell phones and cell towers, wi-fi networks, portable phones, and other sources of radiofrequency radiation.
The Full Feed from HuffingtonPost.com
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These currents are induced by the rapidly changing magnetic field generated by a coil supplied with an alternating current.
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Astronomers have found evidence suggesting that a rare group of ultradense stars are magnetars - the objects with the strongest magnetic fields known in the universe.
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When electrical currents flow they produce magnetic fields and so it is possible that these two therapies amount to the same thing.
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Relative to the direction of the setting sun, the songbirds wanted to fly in a direction that was 90 degrees counterclockwise from the detected magnetic field in order to stay on a northward track.
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In ferromagnetic materials immersed in a magnetic field, magnetization increases as the temperature drops.
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However, the weaker the magnetic field, the lower the frequency needed for a given ion mass.
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Their homing abilities could also provide scientists with new clues to the long-debated role of the Earth's magnetic fields in animal movements and migrations.
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The inner ear's structure and contents is thought to permit the shark to determine and distinguish sounds and the geomagnetic fields of the earth's magma.
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The technique uses a magnetic field which causes old, faulty or infected cells to cluster together and self-destruct.
The Sun
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The northern auroral oval is slightly smaller and more intense than the southern one, implying that Saturn's magnetic field is not equally distributed across the planet; it is slightly uneven and stronger in the north than the south.
Hubble Captures Double Aurorae Light Show on Saturn | Universe Today
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It uses radio waves to ionize a propellant and magnetic fields to accelerate the resulting plasma to generate thrust.en. wikipedia.org/wiki/VASIMR
October | 2009 | My[confined]Space
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Light bullets are the quanta of the electromagnetic field and are known as photons.
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This can be done by friction (heat), twisted magnetic fields and outflows (uncollimated, or collimated; the latter would be jets).
Quasar Caught Building Future Home Galaxy | Universe Today
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The reaction rate of non-leptonic quark weak interaction and the bulk viscosity of quark matter in the magnetic field are investigated.
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In order to generate a magnetic field that can be said to propagate, it is necessary to produce a changing field by turning on an electromagnet or removing a magnet from a magnetic shield such as a superconducting box.
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If an iron bar is placed within the coil core then it is moved by the magnetic field.
Technology Basic Facts
