Magnetic - Law Dictionary Search Results
Home Dictionary Name: magneticmagnetic field
The space around a magnet through which it exerts magnetic force a field of force surrounding a permanent magnet electrical current or a moving charged particle called also magnetic flux and field of magnetic force...
magnetic force
The force caused by a magnetic field a force which affects objects having a magnetic field and objects in which a magnetic field can be induced such as ferromagnetic substances a magnetic force manifests itself as an attraction for iron It is associated with electric currents and moving charged paticles as well as permanent magnets...
Magnetic
Pertaining to the magnet possessing the properties of the magnet or corresponding properties as a magnetic bar of iron a magnetic needle...
magnetic monopole
a hypothetical subatomic particle having only one type of magnetic charge the magnetic analogue of an electrically charged particle it has only one magnetic pole instead of the two observed in all common magnetic object it was still not observed as of 1998...
magnetic compass
An device using a magnet such as a magnetic needle to indicate the direction of magnetic north...
magnetic levitation
The process of supporting an object such as a vehicle with a magnetic field so that it does not contact the object supporting it it is a method used for eliminating friction in moving vehicles and is used eg in high speed rail technology where a train is suspended on a magnetic cushion above a magnetized track and so travels free of friction...
magnetic needle
A slender magnet suspended in a magnetic compass on a low friction mounting used to indicate the direction of the earths magnetic pole...
magnetic resonance imaging
a medical diagnostic procedure utilizing the phenomenon of nuclear magnetic resonance to generate images of internal parts of the body It depends on the differential absorption of electromagnetic radiation by different types of living tissue in a magnetic field It is complementary to X ray imaging in that the softer tissue show more prominently in magnetic resonance images rather than bone as with X rays It is a non invasive procedure allowing such images to be obtained without penetration of the tissue by objects It is abbreviated MRI As with computerized tomography the results are usually presented as images of sequential planar sections of that part of the body of concern to the physician...
Magnetize
To communicate magnetic properties to to make magnetic as to magnetize a needle...
nuclear magnetic resonance
The specific absorption and re emission of electromagnetic radiation at characteristic wavelengths by atomic nuclei in a magnetic field It is abbreviated NMR The wavelength of the radiation absorbed depends on the type of nucleus the intensity of the magnetic field and the local chemical environment in which the nucleus resides It is the latter effect called the chemical shift by which atoms of specific elements in different chemical compounds show a different resonance frequency which gives rise to the greatest utility of this phenomenon in analyzing the chemical structure of substances Similar effects of the chemical environment permit the discrimination of different types of living tissue by virtue of their different chemical composition thus permitting utilization of the phenomenon in medical diagnostic instruments especially for magnetic resonance imaging...
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