| The main component of the Sun's magnetic field is similar to a bar magnet, with a positive pole and a negative pole. |
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| The spinning protons in the hydrogen nuclei act like tiny magnets and align their spins with or against the magnetic field. |
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| The magnetic field of the linear motor is self-contained within the U-channel design. |
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| An electric current passing through a flat, handheld insulated coil that is placed tangentially on the scalp generates a magnetic field. |
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| In the presence of a magnetic field, the Lorentz force causes the resonator to vibrate. |
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| To change the velocity of an electron requires that a Lorentz force acts on it, through an electric or a magnetic field. |
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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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| During braking, the metal wheels are exposed to a magnetic field from an electromagnet, generating eddy currents in the wheels. |
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| Electricity flowing in a conductor generates both a magnetic field and an electric field. |
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| If the distribution of moving electric charge is not symmetric, the magnetic field will also be unsymmetric. |
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| Although short pulses of radio waves briefly disturb this spin alignment, the spins promptly realign in the direction of the magnetic field. |
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| Measurements taken from these stations help to get a global picture of the magnetic field. |
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| The most effective counter-measure was degaussing which obliterated the magnetic field of a steel hull. |
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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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| Mercury is also the only planet other than Earth that has a global magnetic field. |
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| When a current flows through a wire a circular magnetic field is created around it. |
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| Similarly, superconductivity can be destroyed by applying a magnetic field that exceeds some critical value. |
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| With Pease's invention, a diver carries a footlong antenna that emits a magnetic field. |
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| But outside of Earth's magnetic field, there is no natural shield from cosmic rays and solar protons. |
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| The link between cosmic rays, solar activity, and climate seems to be the interplanetary magnetic field. |
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| Cassini also carries tools to study cosmic dust around Saturn, as well as the planet's auroras and its odd magnetic field. |
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| When the burst of electrical current ends the magnetic field reverses polarity. |
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| That's because the sun's magnetic field begins flipping polarity, and the disordered field can't efficiently deflect dust particles. |
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| Three years later he published a paper on the motion of iron filings on a vibrating plate which was subjected to a magnetic field. |
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| We are shooting a music video which involves macro photography of iron filings and ferrofluid, looking at their reaction to the magnetic field. |
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| The magnetic field pulls apart the two electrons forming Cooper pairs and also rotates their spins. |
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| The earth's magnetic field now points south, meaning that a compass needle points north. |
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| The flow of electric currents in the ionosphere decreased and offset the strength of Earth's magnetic field by more than 10 percent. |
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| Massive solar explosions called flares often accompany coronal mass ejections, which emit solar material and a magnetic field. |
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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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| These flowing charged particles constitute and interact with an interplanetary magnetic field. |
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| Parker also showed how the solar wind would carry the solar magnetic field into interplanetary space. |
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| Ultra high frequency modalities, magnetic field generators, interferential and ultra sound are some of those most frequently employed. |
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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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| If the magnetic field in the solar wind is directed southward, it can interconnect with the Earth's northward-oriented 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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| These clouds would be excellent conductors of electricity and so would generate currents and distort Earth's magnetic field. |
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| And each lurched inward, inharmoniously with its neighbors, in the grip of the overall magnetic field. |
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| As these ferromagnetic substances move within the magnetic field of the permanent magnet, it causes the flux through the bobbin to change. |
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| Ferromagnetism is a form of magnetism that can be acquired in an external magnetic field and usually retained in its absence. |
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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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| This finding strengthened the idea that pigeons unable to see the sun rely on the earth's magnetic field as a compass. |
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| A magnetometer is a device that, like the magnet of a compass, reacts to changes in the earth's magnetic field. |
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| Our furnace uses induction heating in which a controlled high-frequency magnetic field induces electrical currents in the platinum. |
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| The heat supply medium includes a metallic body for induction heating, which is provided with a magnetic field to produce an eddy current. |
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| Due to irradiation of the laser beam, a defect position is heated to cause a thermoelectromotive current, which induces a 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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| This persistent current induces a magnetic field which exactly cancels the external field. |
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| We can, however, extrapolate the photospheric magnetic field into the corona. |
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| In the presence of a magnetic field, the amount of laser light that is absorbed by the atoms changes and this is detected by a photocell. |
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| A centralized columnated beam of carrier holes is thus provided for deflection by the magnetic field. |
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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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| If this condition persists even in the absence of an external magnetic field, the material is a permanent magnet. |
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| Researchers say their study proves for the first time that homing pigeons can sense Earth's magnetic field. |
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| The MRI scanner uses a strong magnetic field to align hydrogen atoms in the body. |
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| Bolstering that view, simple models of the heliosphere require that the magnetic field intensifies in regions where the solar wind slows. |
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| The average strength of the magnetic field carried by the solar wind depends on solar location as well. |
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| Linear equations can't easily capture magnetic field helicity, a property that prevents much of the field's energy from dissipating as heat. |
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| The Larmor frequency relates to electrons orbiting in a magnetic field and led him to postulate electrons as orbiting around some centre. |
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| He found that if the tube was placed within an electric or magnetic field, then the cathode rays could be deflected or moved. |
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| For example, the Earth's magnetic field has a harmonic related to the Moon's daily variations, and also many other harmonics. |
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| An rf coil is positioned to optimize its interaction with the static magnetic field. |
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| Previous attempts to measure a neutron star's redshift focused on a star with an enormous magnetic field. |
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| The resistivity, which is the inverse of the conductance, in the Hall effect varies linearly with the applied magnetic field. |
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| In a normal Hall effect, a voltage is created perpendicular to an electric current as it flows through a conductor in a magnetic field. |
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| The metal vibrates rapidly when subjected to a magnetic field, producing heat. |
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| When stimulated by a magnetic field, Terfenol-D expands and contracts at very high frequency with dramatic force. |
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| The internal magnetic field of the Sun waxes and wanes on an 11-year cycle which affects the space weather. |
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| The declination variometer enables us to measure variations in the declination of the Earth magnetic field. |
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| The STAR detector is a large volume, gas-filled detector to record charged particle tracks in a solenoidal magnetic field. |
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| The STAR baseline design that has been approved for construction calls for a large volume Time Projection Chamber in a solenoidal magnetic field. |
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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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| Saturn, its moons and highly structured rings live inside a huge cavity in the solar wind created by the planet's strong magnetic field. |
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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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| The Earth's magnetic field aligns liquid particles much like tiny compass needles. |
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| The blind mole rat is the first animal found to navigate by combining dead reckoning with a sense of Earth's magnetic field, researchers say. |
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| Because nickel is magnetic, researchers could use an external magnetic field to direct nickel-containing nanorods to specific parts of the body. |
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| The darkest, central region of a sunspot, called the umbra, features tightly bundled magnetic field lines. |
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| And nor do I know how many megajoules the magnetic field had to start with. |
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| On Earth, scientists think the magnetic field is generated by our planet's spinning molten iron core. |
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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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| A magnet with 1.0 tesla field strength would have a stronger magnetic field and be more forceful than a magnet with a 0.5 tesla magnetic field. |
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| Tsagas found that the magnetic tension in bent magnetic field lines tends to flatten the surrounding space. |
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| The observations showed a bending of the magnetic field, with the magnetospheric plasma being slowed and deflected by the moon. |
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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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| Researchers analysed data obtained by the Galileo space probe on January 3, when Europa's magnetic field was measured by a magnetometer. |
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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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| Even Luna 1 carried a magnetometer and found that the Moon produces no significant magnetic field, quite unlike Earth. |
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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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| Some materials, called diamagnetic, tend to become magnetized in a direction opposite to the magnetic field being applied to them. |
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| Because the string is magnetized, the magnetic field surrounding it will also vibrate with the string. |
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| This current sets up a magnetic field which oscillates in phase with the transmitter current. |
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| In ferromagnetic materials immersed in a magnetic field, magnetization increases as the temperature drops. |
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| Even at the present time, while the Earth's magnetic field is relatively stable, the location of the magnetic poles is slowly shifting. |
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| The source is a gyrotron, a device that accelerates electrons through a strong magnetic field to produce microwaves. |
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| There are no known harmful effects from exposure to the magnetic field or radio waves used in making MRI images. |
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| Secondly, a moving magnet moves in relation to the earth's magnetic field, so the behaviour of the balance might be affected. |
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| It worked under the same principle as a dynamo, where a moving wire in a magnetic field would create electricity. |
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| First, they tuned the magnetic field to a value corresponding to an effective interparticle attraction, and allowed the gas to equilibrate. |
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| The two low magnetic field electric motors feature compensated stray fields and are each rated at 125kW for minehunting. |
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| Iron creates the magnetic field and copper wires carry away the current generated. |
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| Second, the magnetic field is constantly changing, and this means that the magnetic poles are constantly in motion. |
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| Magnetohydrodynamic waves are produced by coupling forces between the magnetic field and highly conductive fluids. |
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| The spin of an electron generates a tiny magnetic field along the particle's spin axis. |
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| By combining a weak horizontal magnetic field with a strong vertical magnetic field, we can extract light that is elliptically polarized. |
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| The inductance of the loop is going to resist the change in magnetic field within it and an emf will be generated. |
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| Known as a Feshbach resonance, this pairing phenomenon can be externally controlled by the Zeeman effect using an applied magnetic field. |
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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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| The reason for the Zeeman effect is that in a magnetic field, the angular momentum quantum state can undergo a displacement from degeneracy. |
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| The effect is due to the distortion of the electron orbitals because of the magnetic field. |
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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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| Short bursts of electrical current are send through a coil of wire, causing a 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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| 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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| Thus, the induced voltage in the coil generated by any outer magnetic field is controlled to reduce noise. |
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| Should the deformation lead to the decrease in the coil's inductance, the energy of the magnetic field will increase. |
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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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| Similarly, if you move a magnet near a wire, the magnetic field will cause electrons in the wire to move. |
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| Electrons produce a small magnetic field as they spin and orbit the nucleus of an atom. |
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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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| Spacecraft that visit Jupiter must be designed to remain unaffected by this powerful magnetic field. |
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| Ferroelectric materials can create an electric field the way iron magnets create a magnetic field. |
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| The tail drags behind the bullet-shaped heliosphere, or the bubble surrounding our solar system that's created by the solar wind and solar magnetic field. |
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| The pulses are from a beam of light produced by the intense magnetic field, which sweeps across Earth as the neutron star rotates. |
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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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| Other measurements obtained during the mission provided new data on the Earth's radiation belt and the discovery that the Moon has no magnetic field. |
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| Recruited to join a research project on the Earth's magnetic field, Dalrymple came to the USGS in 1963 to establish a laboratory for precise radiometric dating of rocks. |
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| That shows the magnetic field at work protecting us from these highly energetic particles. |
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| The Zeeman effect is the splitting of a spectral line by a magnetic field. |
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| Magnetic storms can damage power systems and pipelines, whilst the changes in the magnetic field can mislead any navigational systems that use magnetic compasses. |
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| The holmium atoms in this salt all behave like tiny magnets and, in the absence of a magnetic field, their magnetic moments point in random directions. |
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| The current pulse briefly created a magnetic field in the direction opposite to the static field, causing the nickel-iron's magnetization to flip twice in rapid succession. |
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| The fact that a material can be magnetized does not necessarily mean that it will retain its magnetism once the applied magnetic field has been removed. |
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| When Cassini had its first encounter with Enceladus on 17 February at an altitude of 1167 kilometres, the magnetometer saw a striking signature in the magnetic field. |
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| Another measures disturbances to the earth's magnetic field caused by buried features such as some construction materials, pottery, pits, ditches and walls. |
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| Reversals of the Earth's magnetic field, allied to sea-floor spreading, have left their imprint in the form of a magnetic tape recorder on the sea-floor. |
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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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| A set of six hoop coils around the outside of the machine produces the magnetic field that shapes and positions the plasma centrally in the torus. |
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| On the other hand, the moon is small and without an atmosphere or a magnetic field to deflect solar radiation. |
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| One of the emerging branches of research focused on the galactic and solar origins of cosmic rays and the modulation of their flux by the interplanetary magnetic field. |
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| While every neutron star has an intense magnetic field, the ones known as magnetars are exceptional. |
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| Permittivity is a measure of a material's response to an applied electric field, while permeability is a measure of the material's response to an applied magnetic field. |
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| Mars has only the tiniest trace of a magnetic field, nothing like the huge bubble that surrounds the earth and protects us from solar and cosmic radiation. |
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| A coil of a superconducting material could produce a substantial magnetic field, which could, in turn, deflect the energetic galactic cosmic radiation. |
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| A large ball of gas, generating energy by nuclear fusion, it also created a magnetic field enclosing Earth and the other planets in a gigantic magnetic bubble. |
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| To make sure, they reduced the static magnetic field, thereby displacing the resonant slice and, with it, the separation needed between tip and spin. |
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| Research is being carried out on several types of stellarator differing mainly in the periodicity of the toroidal and poloidal components of their magnetic field. |
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| These are charged particles travelling through space that are constrained to travel along the galactic and heliospheric magnetic field lines, like on rails. |
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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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| 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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| A small sample of the compound is placed in a strong magnetic field. |
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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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| 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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| 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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| Electromagnetic therapy uses a pulsed magnetic field to induce current. |
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| By incorporating nanowires as filaments in bigger superconducting wires, for example, more current could be carried without being destroyed by a magnetic field. |
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| By utilizing a small magnetic head in close proximity to the disk, the polarity of the magnetic field on an OSD drive can be switched at a very high frequency. |
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| Pigeons released with an earth strength magnetic field around their heads vanish in slightly different directions depending on the polarity of the magnetic field. |
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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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| A magnetic field, if indeed it existed, would have shielded the planet from intense cosmic rays and solar wind, creating a more hospitable environment. |
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| Due to certain conditions of the earth beneath dwellings, electrical currents are caused to flow, thus producing a magnetic field that extends into the dwelling space. |
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| The shock wave and cloud smashed into the Earth's magnetic field, causing a huge increase in the flow of invisible electric currents in space and in our atmosphere. |
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| Perhaps the most important improvement has been the replacement of an electrical magnet with a series of permanent magnets to generate the cyclotron's magnetic field. |
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| The strength of the magnetic field is 0.12 tesla or 1,200 gauss. |
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| Its magnetic field grows very intense as well, to a trillion gauss or so. |
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| The magnetic field of the CME merges with the magnetic field on the dayside of Earth, transferring enormous amounts of energy to the magnetosphere in the process. |
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| I was degaussing it by moving it through a static magnetic field. |
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| Unfortunately, DNA displays a negative anisotropy in diamagnetic susceptibility that tends to align the DNA axis perpendicular to the magnetic field. |
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| It is this small magnetic field that is the basis of an electromagnet. |
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| Since the electrified particles are in motion, and a magnetic field is just the result of moving electric charges, the dust devil generates a magnetic field also. |
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| Governments sometimes operate units that specialize in measurement of the Earth's magnetic field. |
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| In some simulations, this leads to an instability in which the magnetic field spontaneously flips over into the opposite orientation. |
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| Instead, the magnetic field due to materials is generated by a configuration called a dipole. |
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| During the 1950s and 1960s information about variations in the Earth's magnetic field was gathered largely by means of research vessels. |
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| Animals including birds and turtles can detect the Earth's magnetic field, and use the field to navigate during migration. |
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| Analyses of the Earth's magnetic field use a modified version of the usual spherical harmonics that differ by a multiplicative factor. |
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| The most common way of analyzing the global variations in the Earth's magnetic field is to fit the measurements to a set of spherical harmonics. |
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| When newly formed rock cools, such magnetic materials record the Earth's magnetic field. |
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| The induced eddy currents generate their own magnetic field that interacts with the test coil magnetic field. |
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| Our sample includes slow and fast rotators, with and without a magnetic field, with and without a stellar wind. |
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| A separate law of nature, the Lorentz force law, describes how the electric and magnetic field act on charged particles and currents. |
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| The average magnetic field in the Earth's outer core was calculated to be 25 gauss, 50 times stronger than the field at the surface. |
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| In a stationary fluid, the magnetic field declines and any concentrations of field spread out. |
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| The mechanism by which the Earth generates a magnetic field is known as a dynamo. |
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| The dipole component of Earth's field can diminish even while the total magnetic field remains the same or increases. |
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| In induction heating process, an alternating current is passed through a conductor creating an alternating magnetic field. |
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| In the induction motor cross section sketch of Figure 1, the stator has a three-phase AC winding to create a rotating magnetic field. |
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| A ferrofluid is a liquid that becomes strongly magnetized in the presence of a magnetic field. |
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| The patch occurs at the end of a magnetic field line connecting Saturn and its moon Enceladus. |
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| The new findings support the notion that each end of a magnetic field line within a galaxy is anchored to a dense gas cloud. |
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| In a strong magnetic field at right angles to the walls, the electron spirals around a magnetic field line as it bounces back and forth. |
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| This causes electrons to speed down Earth's magnetic field lines toward the poles. |
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| The nature of Earth's magnetic field is one of heteroscedastic fluctuation. |
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| Changes in Earth's magnetic field on a time scale of a year or more are referred to as secular variation. |
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| As the microbes propel themselves along with their whip-like flagella, Earth's magnetic field turns them toward the poles. |
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| The projection of the neutron magnetic moment on the magnetic field direction is an adiabatic invariant. |
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| The rate of reversals in the Earth's magnetic field has varied widely over time. |
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| It has spent nearly two decades using radio waves to probe Earth's magnetic field and ionosphere. |
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| David and Brunhes first observed magnetizations in lava flows that were roughly opposed to that of the present earth's magnetic field. |
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| The forced convection heat transfer from a sphere which is under the influence of an external magnetic field is investigated. |
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| As each coil is energized in turn, the rotor aligns itself with the magnetic field produced by the energized field winding. |
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| Earth's magnetic field, predominantly dipolar at its surface, is distorted further out by the solar wind. |
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| One way to define a pole is as a point where the magnetic field is vertical. |
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| One stripping mechanism is for gas to be caught in bubbles of magnetic field, which are ripped off by solar winds. |
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| When newly formed rock cools, such magnetic materials recorded the Earth's magnetic field at the time. |
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| The magnetosphere is the region above the ionosphere that is defined by the extent of the Earth's magnetic field in space. |
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| The orientations of the field in the oceanic crust preserve a record of directions of the Earth's magnetic field with time. |
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| Recent but disputed research suggests that eels possibly use Earth's magnetic field to navigate through the ocean both as larvae and as adults. |
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| Microbats possess magnetoreception, in that they have a high sensitivity to Earth's magnetic field, similar to birds. |
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| Some ships are built with magnetic inductors, large coils placed along the ship to counter the ship's magnetic field. |
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| The models were placed within coils which could simulate the Earth's magnetic field at any location. |
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| Ships slowly regain their magnetic field as they travel through the Earth's magnetic field, so the process has to be repeated every six months. |
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| This induced a large magnetic field and swept the entire area between the two ships. |
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| The relative motion between a magnetic field and a conductor creates an electrical current. |
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| Early researchers found that an electric or magnetic field could split radioactive emissions into three types of beams. |
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| Migrating birds navigate using celestial cues from the sun and stars, the earth's magnetic field, and probably also mental maps. |
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| Radio emissions from Hydra A reveal that if the magnetic field is distributed throughout the cluster, it has a strength of 10 microgauss. |
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| Such flares sometimes disrupt the Earth's magnetic field causing a magnetic storm that can be recorded with a magnetograph. |
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| One such property is the magnetic moment, which describes how a particle responds to a magnetic field. |
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| The force is proportional to the magnetic field gradient acting on the magnetic moment of the particle. |
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| They are able to detect the Earth's magnetic field and hence navigate back to their colonies. |
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| The axial interpole magnetic circuit provides a uniform magnetic field to remove tramp iron from material on almost any belt conveyor. |
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| A magnetic field is generated by use of a bar magnet located below the surface. |
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| In addition, they say it is the only object ever observed to have a predominantly quadrupole magnetic field. |
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| During his Volta Laboratory period, Bell and his associates considered impressing a magnetic field on a record as a means of reproducing sound. |
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| An air gap at the bottom of the plunger creates a resistance that the magnetic field strives to overcome. |
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| This results when a small region, whose magnetic field is grossly amplified by vortically induced shear, is spun about the symmetry axis. |
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| Because of this symmetry electric and magnetic field are treated on equal footing and are recognised as components of the Faraday tensor. |
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| The changing magnetic field creates a changing electric field through Faraday's law. |
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| This can be created by aligning an iron or steel rod with Earth's magnetic field and then tempering or striking it. |
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| Any electrically conductive body produces its own magnetic field when it is carrying an electric current. |
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| Eventually the energy stored in the magnetic field is released in a solar flare as the magnetic field settles back into a lower energy state. |
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| From time to time the strong magnetic field around the Sun is disturbed and powerful solar flares can occur. |
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| The sensor uses highly calibrated internal electronics to measure the response of the device to the Earth's magnetic field. |
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| Scientists found that thrush nightingales subjected to a magnetic field simulating the one in northern Egypt began stocking up on food. |
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| It is when such a mass crashes into the Earth's magnetic field that the Northern and Southern Lights occur. |
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| Performance of NMR spectrometers greatly depends on homogeneity and strength of the magnetic field. |
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| However, as a consequence, it predicts that a changing magnetic field induces an electric field and vice versa. |
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| Suri and Suri had studied the effects of static transverse magnetic field on the stenosed bifurcated model of artery. |
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| The degausser must have a high enough coercivity rating to overcome the drive's magnetic field and completely erase its stored information. |
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| Energy of the inter action of Co-60 nucleus magnetic moment with the outside magnetic field of a few hundred oersteds is negligible. |
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| In other words, any magnetic field line that enters a given volume must somewhere exit that volume. |
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| However, paleointensity measurements show that the magnetic field has not disappeared during reversals. |
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| They argue that the atmosphere of Mars may have been eroded away by the solar wind because it had no magnetic field to protect it. |
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| The cellular flow has been chosen because it is a model for a vortical flow, in which influence of the magnetic field can be studied. |
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| Most such proposals rest on the assumption that the Earth's magnetic field would be much weaker during reversals. |
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| A tissue contains many voxels, and each voxel emits a signal in response to the magnetic field created by the scanner. |
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| In terms of field lines, this equation states that magnetic field lines neither begin nor end but make loops or extend to infinity and back. |
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| The magnetic field passes through the scalp and skull, and induces a current in the underlying tissue, which depolarizes neurons. |
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| Diamagnetism is a property of some materials such as graphite that causes them to levitate in a stable manner in a magnetic field without power. |
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| The researchers found that even an Earth-like magnetic field could not necessarily protect a habitable-zone world from the star's continuous stellar wind bombardment. |
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| Here in the present work we study the MHD stability of a self-gravitating-rotating streaming inviscid fluid medium pervaded by general magnetic field. |
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| At the end of each horizontal scan line the magnetic field, which has built up in both transformer and scan coils by the current, is a source of latent electromagnetic energy. |
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| Magnetometers detect minute deviations in the Earth's magnetic field caused by iron artifacts, kilns, some types of stone structures, and even ditches and middens. |
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| A PM motor does not have a field winding on the stator frame, instead relying on PMs to provide the magnetic field against which the rotor field interacts to produce torque. |
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| He speculates that water movement underground or pressure on certain minerals could have generated voltages that would alter the magnetic field in the ULF band. |
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| Equivalent technical statements are that the sum total magnetic flux through any Gaussian surface is zero, or that the magnetic field is a solenoidal vector field. |
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| Finally, the analysis of agyrotropy shows the presence of a distinct double structure laying all over the lower side facing the higher magnetic field region. |
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| They have observed that application of magnetic field reduces the strength of stenosis at the apex of bifurcation, shear stress and increases the velocity of blood flow. |
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| However, it is kept away by the pressure of the Earth's magnetic field. |
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| It is also worth noting that the magnetic field from an arbitrary current distribution may be represented as what is known as a multipole expansion. |
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| The vertical alignment of the magnetic field created by the coils must meet critical tolerances less than one milliradian along the length of the 56-ft-long assembly. |
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| They also observed that the intensity of high-energy cosmic rays tend to increase with increasing magnetic field strength and increasing magnetic fluctuations. |
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| Magnetic therapy, or magnotherapy, including the use of a magnetic field. |
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| If the Earth's magnetic field were perfectly dipolar, the geomagnetic poles and magnetic dip poles would coincide and compasses would point towards them. |
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| In synchronous machines, the magnetic field must be provided by means other than induction such as from separately excited windings or permanent magnets. |
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| Later on in his life, in 1862, Faraday used a spectroscope to search for a different alteration of light, the change of spectral lines by an applied magnetic field. |
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| Dungey first sketched the consequences for an interplanetary magnetic field that was oppositely directed from the generally northward terrestrial field. |
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| In 1824, Faraday briefly set up a circuit to study whether a magnetic field could regulate the flow of a current in an adjacent wire, but he found no such relationship. |
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| Using magnetoception various other organisms, ranging from some types of bacteria to pigeons, use the Earth's magnetic field for orientation and navigation. |
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| The magnetic field will not vanish completely, but many poles might form chaotically in different places during reversal, until it stabilizes again. |
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| Because the magnetic field is global, similar patterns of magnetic variations at different sites may be used to correlate age in different locations. |
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| Most sedimentary rocks incorporate tiny amounts of iron rich minerals, whose orientation is influenced by the ambient magnetic field at the time at which they formed. |
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| The detection of the modulated transmission by a photodetector allows a direct and real time measurement of the magnetic field in terms of the Larmor frequency. |
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| The study of past magnetic field of the Earth is known as paleomagnetism. |
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| They measured the temperature and magnetic field dependency of several physical characteristics including resistivity, heat capacity and magnetisation. |
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| Three decades later, when Earth's magnetic field was better understood, theories were advanced suggesting that the Earth's field might have reversed in the remote past. |
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| The energy source for solar flare activity comes from the tangling of magnetic field lines resulting from the rotation of the Sun's conductive plasma. |
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| Through his research on the magnetic field around a conductor carrying a direct current, Faraday established the basis for the concept of the electromagnetic field in physics. |
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| Likewise, the pattern of reversals together with age measurements of the crust is used to help establish the history of the Earth's magnetic field. |
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| Each measurement of the magnetic field is at a particular place and time. |
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| Radiation belts have been found circling all the planets in the Solar System that have a strong magnetic field, namely Jupiter, Saturn, Uranus, Neptune, and Earth. |
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| Offers its Ener-Seal induction cap sealer, a noncontact system which establishes a magnetic field that heats the foil in the cap liner and creates a hermetic seal. |
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| When a discontinuity is present, it alters the characteristics of the eddy current magnetic field, which then alters the interaction between the two magnetic fields. |
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| After the preliminary dimensioning, the precise dimensions were sought to find the proper magnetic field distribution and the required magnetic flux density. |
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| The extent of Earth's magnetic field in space defines the magnetosphere. |
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| The equations introduce the electric field, E, a vector field, and the magnetic field, B, a pseudovector field, each generally having a time and location dependence. |
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| Sea floor electrometers which measure the average speed of an ocean current by sensing the electric field created by salty seawater moving through the earth's magnetic field. |
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| Thus, the magnetic particles form special chainlike structure in the direction of the magnetic field, which results in the controllable shear modulus with the magnetic fields. |
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| Observations made of the magnetic field of Mars by the Mars Global Surveyor spacecraft in 1999 showed patterns of magnetic striping discovered on this planet. |
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| For the Earth, this could have been an external magnetic field. |
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| Boats typically lack the generators and space for the solution, while the amount of power needed to overcome the magnetic field of a large ship is impractical. |
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| Using magnetic probes in strategic parts of the ship, the strength of the current in the coils can be adjusted to minimize the total magnetic field. |
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| In the electric and magnetic field formulation there are four equations. |
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| The rotor usually has conductors laid into it which carry currents that interact with the magnetic field of the stator to generate the forces that turn the shaft. |
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| The magnetic field of the Earth was not well understood at the time. |
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| The loop inductance of an interconnect is the total number of rings of magnetic field lines surrounding the conductor, per amp of current through it. |
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| For volcanic rocks, magnetic minerals, which form in the melt, orient themselves with the ambient magnetic field, and are fixed in place upon crystallization of the lava. |
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| The magnetic field at the energy detector is low, so if the electron backscatters it has little chance to be transported back through the entrance of the chamber. |
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| Generating a safe magnetic field, the ACT System together with iron oxide nanoparticles delivered via catheter as an intravesical ferrofluid operates as a treatment system. |
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