electromagnetics
Waves and fields
Electromagnetics is the branch of physics dealing with the relationship between electricity and magnetism—how electric currents create magnetic fields, how changing magnetic fields induce electric currents, and how electromagnetic waves propagate through space.
The field underpins technologies from motors and generators to radio transmission and wireless communication.
Also called electromagnetism.
Continuous change or flow
- permeabilityAbility to transmit fluids
- permittivityElectric polarization capacity
- susceptibilityLiability to influence
- electrostaticsStudy of stationary charges
magnetization · polarization · dielectric · hysteresis · ferromagnetism · paramagnetism · diamagnetism · remanence
Current-limiting circuit element
- capacitorCharge-storing circuit element
- inductorCoil storing magnetic energy
- impedanceAC circuit opposition
- reactanceOpposition to alternating current
resonance · filter · transmission line · coaxial cable · bandwidth · cutoff frequency · passband
Spatial repetition interval
- frequencyRate of recurrence
- amplitudeMaximum oscillation displacement
- propagationAct of spreading widely
- radiationEnergy propagation through space
antenna · waveguide · polarization · interference · diffraction · reflection · refraction · absorption
Radio-wave object detection
- wireless communicationSending data without cables
- MRIMagnetic body imaging
- microwave ovenAppliance using radiation for heating
- induction heatingWarming metal electromagnetically
transformer · shielding · RFID · NFC · satellite communication · fiber optics · particle accelerator · maglev
Voltage-altering electrical device
- inductorCoil storing magnetic energy
- coilWound circular arrangement
- solenoidCurrent-carrying wire helix
- eddy currentCircular flow in conductors
generator · alternator · armature · rotor · stator · wireless charging
Electromagnetic wave receiver
- microwaveRadiation-based kitchen heater
- infraredHeat-bearing electromagnetic waves
- visible lightRadiation the eye detects
- ultravioletWavelengths shorter than violet
X-ray · gamma ray · terahertz · frequency band · spectroscopy · emission · bandwidth · RF
flux
Continuous change or flow
- permeabilityAbility to transmit fluids
- permittivityElectric polarization capacity
- susceptibilityLiability to influence
electrostatics · magnetization · polarization · dielectric · hysteresis · ferromagnetism · paramagnetism · diamagnetism · remanence · field lines
resistor
Current-limiting circuit element
- capacitorCharge-storing circuit element
- inductorCoil storing magnetic energy
- impedanceAC circuit opposition
reactance · resonance · filter · transmission line · coaxial cable · bandwidth · cutoff frequency · passband
wavelength
Spatial repetition interval
- frequencyRate of recurrence
- amplitudeMaximum oscillation displacement
- propagationAct of spreading widely
radiation · antenna · waveguide · polarization · interference · diffraction · reflection · refraction · absorption · transmission
radar
Radio-wave object detection
- wireless communicationSending data without cables
- MRIMagnetic body imaging
- microwave ovenAppliance using radiation for heating
induction heating · transformer · shielding · RFID · NFC · satellite communication · fiber optics · particle accelerator · maglev
transformer
Voltage-altering electrical device
- inductorCoil storing magnetic energy
- coilWound circular arrangement
- solenoidCurrent-carrying wire helix
eddy current · generator · alternator · armature · rotor · stator · wireless charging
radio
Electromagnetic wave receiver
- microwaveRadiation-based kitchen heater
- infraredHeat-bearing electromagnetic waves
- visible lightRadiation the eye detects
ultraviolet · X-ray · gamma ray · terahertz · frequency band · spectroscopy · emission · bandwidth · RF · VHF
oscilloscope
Voltage waveform display device
- calibrationAdjusting for measurement accuracy
- engineeringengineers, civil engineering, engineering, blueprint, mechanical engineering
- Science Booksscience textbooks, Systema Naturae, Gray's Anatomy, Chaos, biology textbook
- electrical engineeringcurrent, circuit design, circuits, voltage, transistors
- Simulationscomputer simulation, virtual reality, flight simulator, VR, fluid dynamics
- engineering physicsmechanics, thermodynamics, dynamics, statics, fluid mechanics
- electronicscomputer, resistors, capacitors, TVs, TV
electromagneticsmechanics
Science of motion
thermodynamics · gravitation · classical mechanics · quantum mechanics · nuclear physics
- electromagnetic wavesSelf-propagating field oscillations
- electromagnetic inductionVoltage from field changes
- electromagnetic pulseEnergy burst disabling electronics
- electromagnetic fieldForce region from charges
- electromagnetic radiationWave-propagating energy through space
- electromagnetic spectrumAll radiation frequencies ordered