magnetic field
Invisible force zone
A magnetic field is the invisible region around a magnet or electric current where magnetic forces act on other magnets or moving charges.
The Earth has a magnetic field that makes compasses work and shields the planet from solar radiation.
Magnetic fields are fundamental to electric motors, generators, and MRI machines.
The magnetic field strength weakens with distance from the source.
Wire-wound magnetic device
- currentDirected flow of charge
- conductorOne who directs musicians
- inductionFormal admission process
- transformerVoltage-altering electrical device
alternating current · direct current · motor · generator · coil · winding · circuit · ampere
Continuous change or flow
- teslaMagnetic flux density unit
- gaussMagnetic flux density unit
- permeabilityAbility to transmit fluids
- inductionFormal admission process
ferromagnetism · paramagnetism · diamagnetism · solenoid · coil · hysteresis · magnetometer · dipole
Force toward oneself
- forceStrength or compulsion
- iron filingsSmall metallic particles
- polesLong sticks or extremities
- nickelElement twenty-eight, or coin
Device showing cardinal directions
- bearingPosture or orientation
- needlePointed implement for sewing
- declinationAngular distance from equator
- true northDirection to the pole
deviation · heading · orienteering · compass rose · magnetometer
Of Earth's magnetic properties
- aurora borealisHigh-latitude luminous sky phenomenon
- aurora australisAntarctic atmospheric light display
- declinationAngular distance from equator
- inclinationDisposition toward something
solar wind · ionosphere · isogonic · space weather · paleomagnetism · geomagnetic storm
Magnetic body imaging
Trackless-seeming rail technology
- superconductorMaterial with zero electrical resistance
- frictionlessHaving no resistance
- suspensionTemporary halt or exclusion
- contactlessRequiring no physical touch
electromagnet
Wire-wound magnetic device
transformer · alternating current · direct current · motor · generator · coil · winding · circuit · ampere · galvanometer
flux
Continuous change or flow
- teslaMagnetic flux density unit
- gaussMagnetic flux density unit
- permeabilityAbility to transmit fluids
induction · ferromagnetism · paramagnetism · diamagnetism · solenoid · coil · hysteresis · magnetometer · dipole · monopole
pull
Force toward oneself
- forceStrength or compulsion
- iron filingsSmall metallic particles
- polesLong sticks or extremities
compass
Device showing cardinal directions
- bearingPosture or orientation
- needlePointed implement for sewing
- declinationAngular distance from equator
true north · deviation · heading · orienteering · compass rose · magnetometer
geomagnetic
Of Earth's magnetic properties
- aurora borealisHigh-latitude luminous sky phenomenon
- aurora australisAntarctic atmospheric light display
- declinationAngular distance from equator
inclination · solar wind · ionosphere · isogonic · space weather · paleomagnetism · geomagnetic storm
MRI
Magnetic body imaging
maglev
Trackless-seeming rail technology
- superconductorMaterial with zero electrical resistance
- frictionlessHaving no resistance
- suspensionTemporary halt or exclusion
- SaturnSaturn, rings, Titan, Enceladus, Tethys
- stellar propertiesluminosity, surface temperature, magnitude, brightness, stellar wind
- geophysicsearthquake, earthquakes, seismology, seismic waves, seismograph
- MRI/NMRMRI scan, resonance, T1, spectrometer, scanner
- Earthearth, Earth, globe, continent, axis
- physicsphysics, momentum, atom, acceleration, gravity
magnetic fieldelectric field
Region affecting nearby charges
gravitational field · gravity · electrical field · strong force · weak force
field, magnet, magnetic, magnetism, magnets, magnetize, magnetized, magnetizing, magnetizes