| magnetocardiography | Measurement of the magnetic field of the heart, produced by the same ionic currents that generate the electrocardiogram, and showing characteristic P, QRS, T, and U waves. (05 Mar 2000) |
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| magnetoencephalogram | A gauss-time record of the magnetic field of the brain. (05 Mar 2000) |
| magnetoencephalography | The measurement of magnetic fields over the head generated by electric currents in the brain. As in any electrical conductor, electric fields in the brain are accompanied by orthogonal magnetic fields. The measurement of these fields provides information about the localization of brain activity which is complementary to that provided by electroencephalography. Magnetoencephalography may be used alone or together with electroencephalography, for measurement of spontaneous or evoked activity, and for research or clinical purposes. (12 Dec 1998) |
| magnetograph | <physics> An automatic instrument for registering, by photography or otherwise, the states and variations of any of the terrestrial magnetic elements. Origin: Magneto- + -graph. Source: Websters Dictionary (01 Mar 1998) |
| magnetogyric ratio | In nuclear magnetic resonance, the ratio of the magnetic dipole moment of the nucleus to the nuclear spin angular momentum; the gyromagnetic ratio is a unique value for each type of nucleus. Synonym: magnetogyric ratio. (05 Mar 2000) |
| magnetohydrodynamics | <physics, study> Physical model describing the properties of electrically conducting fluids interacting with magnetic and electric fields. Magnetohydrodynamic theory is relevant at relatively low frequencies and for distance scales larger than the Larmor radius. Synonym: hydromagnetics. (13 Jan 1998) |
| magnetometer | <physics> An instrument for measuring the intensity of magnetic forces; also, less frequently, an instrument for determining any of the terrestrial magnetic elements, as the dip and declination. Origin: Magneto-: cf. F. Magnetometre. Source: Websters Dictionary (01 Mar 1998) |
| magnetometric | Pertaining to, or employed in, the measurement of magnetic forces; obtained by means of a magnetometer; as, magnetometric instruments; magnetometric measurements. Source: Websters Dictionary (01 Mar 1998) |
| magnetomotor | A voltaic series of two or more large plates, producing a great quantity of electricity of low tension, and hence adapted to the exhibition of electromagnetic phenomena. Source: Websters Dictionary (01 Mar 1998) |
| magneton | A unit of measurement of the magnetic moment of a particle (e.g., atom or subatomic particle). Bohr magneton, a constant in the equation relating the difference in energies between parallel and antiparallel spin alignments of electrons in a magnetic field; the net magnetic moment of one unpaired electron; used in electron spin resonance spectrometry for detection and estimation of free radicals. Synonym: electron magneton. (05 Mar 2000) |
| magnetosome | <microbiology> Enveloped compartment in magnetotactic bacteria containing magnetite particles. By using this organelle to detect the vertical component of the Earth's magnetic field, the bacteria swim towards the bottom of the sea. Origin: Gr. Soma = body (18 Nov 1997) |
| magnetotactic bacteria | <microbiology> Bacteria that can orient themselves in the earth's magnetic field due to the presence of magnetosomes. (09 Oct 1997) |
| magnetotaxis | Tactic response to magnetic field, in magnetotactic bacteria the Earth's magnetic field is used as a guide to up and down in deep sediment. (18 Nov 1997) |
| magnetotherapy | <medicine> The treatment of disease by the application of magnets to the surface of the body. Source: Websters Dictionary (01 Mar 1998) |
| magnetoencephalography |
Magnetoencephalography (MEG) is the measurement of the magnetic fields produced by electrical activity in the brain, usually conducted externally, using extremely sensitive devices such as SQUIDs. Because the magnetic signals emitted by the brain are on the order of a few femtotesla (1 fT = T), shielding from external magnetic signals, including the Earth's magnetic field, is necessary. ...
출처: en.wikipedia.org/wiki/Magnetoencephalography
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| magnetic flux |
Magnetic flux, is a measure of quantity of magnetism, taking account of the strength and the extent of a magnetic field. The flux through an element of area perpendicular to the direction of magnetic field is given by the product of the magnetic field density and the area element. More generally, magnetic flux is defined by a scalar product of the magnetic field density and the area element vector. ...
출처: en.wikipedia.org/wiki/Magnetic_flux
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| magnet therapy |
Magnet therapy, or magnetic therapy, is a pseudoscientific form of alternative medicine based on the concept that certain medical disorders can be effectively treated by exposure to magnetic fields. Some believe that magnetic fields emanating from permanent magnets placed close to the body can cause bones to heal faster, relieve pain, and perform other forms of healing to the body. It is most commonly recommended by practitioners as a cure for joint disorders and back problems. ...
출처: en.wikipedia.org/wiki/Magnet_therapy
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| magnetic resonance imaging |
MRI. A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body. These pictures can show the difference between normal and diseased tissue. MRI makes better images of organs and soft tissue than other scanning techniques, such as CT or x-ray. MRI is especially useful for imaging the brain, spine, the soft tissue of joints, and the inside of bones. Also called nuclear magnetic resonance imaging.
출처: www.stjude.org/glossary
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| magnetic field |
Region surrounding a magnet that describes the force on a test magnet.
출처: highered.mcgraw-hill.com/sites/0072480823/student_...
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| magnet | a slender magnet suspended in a magnetic compass on a mounting with little friction |
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| magnet | the direction in which a compass needle points |
| magnet | one of the two ends of a magnet where the magnetism seems to be concentrated |
| magnet | either of two points where the lines of force of the Earth's magnetic field are vertical |
| magnet | a brownish iron sulfide mineral FeS having weak magnetic properties |
| magnet | recorder consisting of equipment for making records on magnetic media |
| magnet | resonance of electrons or atoms or molecules or nuclei to radiation frequencies as a result of space quantization in a magnetic field |
| magnet | the use of nuclear magnetic resonance of protons to produce proton density images |
| magnet | a sudden disturbance of the earth's magnetic field |
| magnet | memory device consisting of a long thin plastic strip coated with iron oxide |
| magnet | the angle (at a particular location) between magnetic north and true north |
| magnet | as if by magnetism |