magnetic bubble memory

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 ;

magnetic compass

compass based on an indicator (as a magnetic needle) that points to the magnetic north ;

magnetic core

(computer science) a doughnut-shaped magnet formerly used to store one bit of information in the main memory of a computer; now superseded by semiconductor memories ;

magnetic declination

the angle (at a particular location) between magnetic north and true north ;

magnetic dip

(physics) the angle that a magnetic needle makes with the plane of the horizon ;

magnetic dipole

a dipole with opposing magnetic poles ;

magnetic dipole moment

(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" ;

magnetic disc

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

magnetic disk

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

magnetic equator

an imaginary line paralleling the equator where a magnetic needle has no dip ;

magnetic field

the lines of force surrounding a permanent magnet or a moving charged particle ;

magnetic field strength

the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow ;

magnetic flux

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

magnetic flux density

the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow ;

magnetic flux unit

a measure of the strength of a magnetic field per unit area ;

magnetic force

attraction for iron; associated with electric currents as well as magnets; characterized by fields of force ;

magnetic head

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

magnetic inclination

(physics) the angle that a magnetic needle makes with the plane of the horizon ;

magnetic induction

the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow ; the process that makes a substance magnetic (temporarily or permanently) ;

magnetic ink

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

magnetic intensity

the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow ;

magnetic iron-ore

an oxide of iron that is strongly attracted by magnets ;

magnetic levitation

high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction ;

magnetic line of force

a line of force in a magnetic field ;

magnetic medium

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

magnetic meridian

an imaginary line passing through both magnetic poles of the Earth ;

magnetic mine

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

magnetic moment

the torque exerted on a magnet or dipole when it is placed in a magnetic field ;

magnetic monopole

a hypothetical particle with a single magnetic pole instead of the usual two ;

magnetic needle

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 ;

magnetic north

the direction in which a compass needle points ;

magnetic pole

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

magnetic pyrites

a brownish iron sulfide mineral (FeS) having weak magnetic properties ;

magnetic recorder

recorder consisting of equipment for making records on magnetic media ;

magnetic resonance

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

magnetic resonance imaging

the use of nuclear magnetic resonance of protons to produce proton density images ;

magnetic storage

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

magnetic storage medium

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

magnetic storm

a sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun ;

magnetic stripe

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. ;