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magnetic Idioms & Phrases


blood-oxygenation level dependent functional magnetic resonance imaging

  • noun functional magnetic resonance imaging that relies on intrinsic changes in hemoglobin oxygenation
    BOLD FMRI.
WordNet

Electric telegraph, ∨ Electro-magnetic telegraph

  • a telegraph in which an operator at one station causes words or signs to be made at another by means of a current of electricity, generated by a battery and transmitted over an intervening wire.
Webster 1913

electro-magnetic

E*lec`tro-mag*net"ic adjective
Definitions
  1. Of, Pertaining to, or produced by, magnetism which is developed by the passage of an electric current.
Webster 1913

Electro-magnetic engine

  • an engine in which the motive force is electro-magnetism.
Webster 1913

Electro-magnetic induction

  • the influence by which an electric current produces magnetic polarity in certain bodies near or around which it passes.
Webster 1913

Electro-magnetic theory of light

  • (Physics), a theory of light which makes it consist in the rapid alternation of transient electric currents moving transversely to the direction of the ray.
Webster 1913

functional magnetic resonance imaging

  • noun a form of magnetic resonance imaging of the brain that registers blood flow to functioning areas of the brain
    fMRI.
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Magnetic amplitude, attraction, dip, induction

  • etc. See under Amplitude, Attraction, etc.
Webster 1913

magnetic attraction

  • noun attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
    magnetic attraction; magnetism.
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Magnetic battery

  • a combination of bar or horseshoe magnets with the like poles adjacent, so as to act together with great power.
Webster 1913

magnetic bottle

  • noun container consisting of any configuration of magnetic fields used to contain a plasma during controlled thermonuclear reactions
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magnetic bubble memory

  • noun a nonvolatile storage device that holds information in the form of bubbles on a thin film of magnetic silicate; no longer used in most computers
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magnetic compass

  • noun compass based on an indicator (as a magnetic needle) that points to the magnetic north
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Magnetic compensator

  • a contrivance connected with a ship's compass for compensating or neutralizing the effect of the iron of the ship upon the needle.
Webster 1913

magnetic core

  • noun (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories
    core.
    • each core has three wires passing through it, providing the means to select and detect the contents of each bit
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magnetic core memory

  • noun (computer science) a computer memory consisting of an array of magnetic cores; now superseded by semiconductor memories
    core memory.
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Magnetic curves

  • curves indicating lines of magnetic force, as in the arrangement of iron filings between the poles of a powerful magnet.
Webster 1913

magnetic declination

  • noun the angle (at a particular location) between magnetic north and true north
    variation; magnetic declination.
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magnetic dip

  • noun (physics) the angle that a magnetic needle makes with the plane of the horizon
    magnetic dip; angle of dip; inclination; dip.
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magnetic dipole

  • noun a dipole with opposing magnetic poles
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magnetic dipole moment

  • noun (physics) a current loop gives rise to a magnetic field characteristic of a magnetic dipole
    • An orbiting electron in an atom will have a magnetic dipole moment
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magnetic disc

  • noun (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored
    disk; disc; magnetic disc.
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magnetic disk

  • noun (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored
    disk; disc; magnetic disc.
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Magnetic elements

  • . (a) (Chem. Physics) Those elements, as iron, nickel, cobalt, chromium, manganese, etc., which are capable or becoming magnetic. (b) (Physics) In respect to terrestrial magnetism, the declination, inclination, and intensity . (c) See under Element.
Webster 1913

Magnetic equator

  • noun an imaginary line paralleling the equator where a magnetic needle has no dip
    aclinic line.
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  • the line around the equatorial parts of the earth at which there is no dip, the dipping needle being horizontal.
Webster 1913

magnetic field

  • noun the lines of force surrounding a permanent magnet or a moving charged particle
    magnetic field; flux.
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Magnetic field, ∨ Field of magnetic force

  • any space through which magnet exerts its influence.
Webster 1913

magnetic field strength

  • noun the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
    magnetic flux density; magnetic field strength; magnetic induction.
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Magnetic fluid

  • the hypothetical fluid whose existence was formerly assumed in the explanations of the phenomena of magnetism.
Webster 1913

magnetic flux

  • noun a measure of the strength of a magnetic field over a given area
  • noun the lines of force surrounding a permanent magnet or a moving charged particle
    magnetic field; flux.
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magnetic flux density

  • noun the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
    magnetic flux density; magnetic field strength; magnetic induction.
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magnetic flux unit

  • noun a measure of the strength of a magnetic field per unit area
    flux unit.
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magnetic force

  • noun attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
    magnetic attraction; magnetism.
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magnetic head

  • noun an electromagnet (as on a tape recorder) that converts electrical variations into magnetic variations that can be stored on a surface and later retrieved
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magnetic inclination

  • noun (physics) the angle that a magnetic needle makes with the plane of the horizon
    magnetic dip; angle of dip; inclination; dip.
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magnetic induction

  • noun the process that makes a substance magnetic (temporarily or permanently)
    magnetisation; magnetization.
  • noun the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
    magnetic flux density; magnetic field strength; magnetic induction.
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magnetic ink

  • noun an ink that contains particles of a magnetic substance whose presence can be detected by magnetic sensors
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magnetic intensity

  • noun the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
    magnetic flux density; magnetic field strength; magnetic induction.
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Magnetic iron, ∨ Magnetic iron ore

  • . (Min.) Same as Magnetite.
Webster 1913

magnetic iron-ore

  • noun an oxide of iron that is strongly attracted by magnets
    magnetite.
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magnetic levitation

  • noun high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction
    maglev.
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magnetic line of force

  • noun a line of force in a magnetic field
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magnetic medium

  • noun any storage medium in which different patterns of magnetization are used to represent stored bits or bytes of information
    magnetic storage; magnetic medium.
    • the hard disk in you computer is magnetic storage
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magnetic meridian

  • noun an imaginary line passing through both magnetic poles of the Earth
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magnetic mine

  • noun (nautical) a marine mine that is detonated by a mechanism that responds to magnetic material (as the steel hull of a ship)
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magnetic moment

  • noun the torque exerted on a magnet or dipole when it is placed in a magnetic field
    moment of a magnet.
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magnetic monopole

  • noun a hypothetical particle with a single magnetic pole instead of the usual two
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Magnetic needle

  • noun a slender magnet suspended in a magnetic compass on a mounting with little friction; used to indicate the direction of the earth's magnetic pole
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  • a slender bar of steel, magnetized and suspended at its center on a sharp-pointed pivot, or by a delicate fiber, so that it may take freely the direction of the magnetic meridian. It constitutes the essential part of a compass, such as the mariner's and the surveyor's.
Webster 1913

magnetic north

  • noun the direction in which a compass needle points
    compass north; north.
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magnetic pole

  • noun either of two points where the lines of force of the Earth's magnetic field are vertical
    magnetic pole.
  • noun one of the two ends of a magnet where the magnetism seems to be concentrated
    pole; magnetic pole.
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Magnetic poles

  • noun either of two points where the lines of force of the Earth's magnetic field are vertical
    magnetic pole.
  • noun one of the two ends of a magnet where the magnetism seems to be concentrated
    pole; magnetic pole.
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  • the two points in the opposite polar regions of the earth at which the direction of the dipping needle is vertical.
Webster 1913

Magnetic pyrites

  • noun a brownish iron sulfide mineral (FeS) having weak magnetic properties
    pyrrhotite; pyrrhotine.
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  • . See Pyrrhotite.
Webster 1913

magnetic recorder

  • noun recorder consisting of equipment for making records on magnetic media
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magnetic resonance

  • noun resonance of electrons or atoms or molecules or nuclei to radiation frequencies as a result of space quantization in a magnetic field
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magnetic resonance imaging

  • noun the use of nuclear magnetic resonance of protons to produce proton density images
    MRI.
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magnetic storage

  • noun any storage medium in which different patterns of magnetization are used to represent stored bits or bytes of information
    magnetic storage; magnetic medium.
    • the hard disk in you computer is magnetic storage
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magnetic storage medium

  • noun any storage medium in which different patterns of magnetization are used to represent stored bits or bytes of information
    magnetic storage; magnetic medium.
    • the hard disk in you computer is magnetic storage
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Magnetic storm

  • noun a sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun
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  • (Terrestrial Physics), a disturbance of the earth's magnetic force characterized by great and sudden changes.
Webster 1913

magnetic stripe

  • noun a short strip of magnetic tape attached to a credit card or debit card; it contains data that will tell a reading device who you are and what your account number is, etc.
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magnetic tape

  • noun memory device consisting of a long thin plastic strip coated with iron oxide; used to record audio or video signals or to store computer information
    mag tape; tape.
    • he took along a dozen tapes to record the interview
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Magnetic telegraph

  • a telegraph acting by means of a magnet. See Telegraph.
Webster 1913

magnetic variation

  • noun the angle (at a particular location) between magnetic north and true north
    variation; magnetic declination.
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negative magnetic pole

  • noun the pole of a magnet that points toward the south when the magnet is suspended freely
    negative pole; south-seeking pole.
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nuclear magnetic resonance

  • noun resonance of protons to radiation in a magnetic field
    nuclear magnetic resonance; NMR.
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positive magnetic pole

  • noun the pole of a magnet that points toward the north when the magnet is suspended freely
    north-seeking pole; positive pole.
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proton magnetic resonance

  • noun resonance of protons to radiation in a magnetic field
    nuclear magnetic resonance; NMR.
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solar magnetic field

  • noun the magnetic field of the sun
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