eddy currents
Looping induced flows
Eddy currents are loops of electrical current induced within conductors by a changing magnetic field.
Named for their resemblance to swirling eddies in water, they flow in closed circles perpendicular to the magnetic field.
Eddy currents generate heat and resist motion—useful in magnetic braking systems and induction cooktops, but wasteful in transformers and motors where they cause energy loss.
Formal admission process
- magnetic fieldForce zone around magnets
- electromagnetic inductionVoltage from field changes
- fluxContinuous change or flow
- conductivityAbility to carry current
conductor · magnetic flux · electromagnetism · permeability · ferromagnetic · Faraday
Warming metal electromagnetically
- metal detectorDevice sensing buried conductors
- induction cooktopMagnetic-field cooking surface
- speedometerVehicle velocity display
- sorting machineDevice that separates items
Transferred thermal energy
- dissipationGradual loss or scattering
- power lossFailure of electrical supply
- hysteresisHistory-dependent system response
- inefficiencySuboptimal use of resources
thermal · resistance · damping
Layered sheet bonding
- thin sheetsFlat, minimal-depth material
- slottingFitting into place
- segmentationDivision into sections
induction
Formal admission process
- magnetic fieldForce zone around magnets
- electromagnetic inductionVoltage from field changes
- fluxContinuous change or flow
conductivity · conductor · magnetic flux · electromagnetism · permeability · ferromagnetic · Faraday
induction heating
Warming metal electromagnetically
- metal detectorDevice sensing buried conductors
- induction cooktopMagnetic-field cooking surface
- speedometerVehicle velocity display
heat
Transferred thermal energy
- dissipationGradual loss or scattering
- power lossFailure of electrical supply
- hysteresisHistory-dependent system response
inefficiency · thermal · resistance · damping
laminations
Layered sheet bonding
- thin sheetsFlat, minimal-depth material
- slottingFitting into place
- segmentationDivision into sections