===== Magnetism, electromagnetism, theory, materials, devices, sensors... =====


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/ [[/wiki/about Encyclopedia Magnetica|About us]][[wiki/about_encyclopedia_magnetica#statistics|?]] /
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**[ Basic definitions ]**
  * [[Magnetism]] ([[types of magnetism]])
  * [[Electromagnetism]] 
  * [[Magnetic field]]
    * [[Magnetic flux density|Flux density]] //B// 
    * [[Magnetic field strength|Field strength]] //H//
    * [[Confusion between B and H]]
    * [[Magnetisation]] //M//
    * [[Magnetic polarisation|Polarisation]] //J// 
  * [[Magnetic polarity]]
    * [[Magnetic poles]] ([[Magnetic monopole|monopole]], [[Magnetic dipole moment|dipole]], [[Magnetic dipole moment|moment]])
  * [[Magnetic properties]]
    * [[Types of magnetic susceptibility|Susceptibility]] //χ// or //κ//
    * [[Types of magnetic permeability|Permeability]] //μ// ([[magnetic permeability of vacuum|vacuum]], [[relative magnetic permeability|relative]], [[initial magnetic permeability|initial]], [[complex magnetic permeability|complex]])
    * [[Hysteresis loop]] ([[B-H loop]], [[J-H loop]], [[M-H loop]])
    * [[Coercivity]] //H<sub>c</sub>// (//<sub>B</sub>H<sub>c</sub>// and //<sub>J</sub>H<sub>c</sub>//)
    * [[Remanence]] //B<sub>r</sub>//
    * [[Magnetic saturation]] (//M<sub>sat</sub>//, //J<sub>sat</sub>//, //B<sub>sat</sub>//)
    * [[Demagnetisation]] ([[degaussing]])
    * [[Magnetostriction]] //λ//
    * [[Barkhausen noise]]
    * [[Magnetic domain]] ([[magnetic domain wall|domain wall]])
  * [[History of electromagnetism]]

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**[ Magnetic materials ]**
  * **[[database|DATABASE of magnetic materials]]** :!: 
  * [[magnetic_materials#periodic_table|Periodic table of elements]]
  * [[Magnetic materials]] ([[Non-magnetic materials|non-magnetic]])
  * [[Soft magnetic materials]]
    * [[Electrical steels]]
      * [[Non-oriented electrical steels|Non-oriented]] (NO)
      * [[Grain-oriented]] ([[CGO]], [[Hi-B]], [[DGO]])
      * [[Electrical foils]]
    * [[Soft ferrites]]
    * [[NiFe alloys]]
    * [[CoFe alloys]]
    * [[Amorphous ribbons]]
    * [[Nanocrystalline ribbons]]
    * [[Powder materials]]
  * [[Hard magnetic materials]] (magnets)
    * [[NdFeB]] (neodymium)
    * [[SmCo]] (samarium)
    * [[Hard ferrites]]
    * [[Alnico]]
  * [[Semi-hard magnetic materials]] 
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**[ Calculators ]**
  * **[[Calculators|All calculators]]** :!:
  * [[Conversion between CGS or Gaussian to SI magnetic units|Convert between CGS and SI units]] :!:
  * [[calculator/effective_permeability_from_air_gap|Effective permeability]] //μ<sub>eff</sub>//
  * [[calculator/skin_depth|Skin depth]] ([[calculator/skin_depth|skin effect]])
  * [[calculator/proximity_effect_from_dowell_curves|Proximity loss (Dowell curves)]] //R<sub>ac</sub>//
  * [[calculator/magnetic_coupling_coefficient|Magnetic coupling coefficient]] //k//
  * Calculator of magnetic field of:
    * [[calculator/current_loop_axis|Round current loop]]
    * [[calculator/current_loop_rectangular_axis|Rectangular current loop]]
    * [[calculator/magnetic_field_of_straight_conductor|Straight round conductor]]
    * [[calculator/solenoid_thin|Thin solenoid]]
    * [[calculator/solenoid_thick|Thick solenoid]]
    * [[calculator/solenoid_rectangular|Rectangular solenoid]]
    * [[calculator/helmholtz_coil|Helmholtz coil]]
    * magnet ([[calculator/magnet_rectangular|rectangular]], [[calculator/magnet_cylindrical|cylindrical]])
  * [[calculator/thermal_resistance_of_ferrite_cores|Thermal resistance of ferrite cores]] //R<sub>th</sub>//
  * [[calculator/power_loss_from_volume_to_weight|Power loss between volume and mass]]
  * [[calculator/inductance_of_gapped_inductor|Inductance of a gapped inductor]] //L//
  * [[calculator/induction_heating_power|Induction heating power]] 
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**[ Magnetic circuits ]**
  * [[Magnetic circuit]]
  * [[Magnetic core]]
  * [[Air gap]]
  * [[Fringing flux]]
  * [[Leakage flux]]
  * [[Laminations]]
  * [[Insulation]]
  * [[Wire]]
  * [[Strand]]
  * [[Coil]]
  * [[Winding]] ([[primary winding|primary]], [[secondary winding|secondary]], [[tertiary winding|tertiary]]) 
  * [[Magnetic path length]]
    * [[Effective path length]]
  * [[Cross-sectional area]]
    * [[Effective area]]

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**[ Magnetic losses ]**
  * [[Efficiency]]
  * [[Power loss]]
  * [[Energy loss]]
  * [[Hysteresis loss]]
  * [[Eddy current loss]]
  * [[Excess loss]] (additional / anomalous)
  * [[Proximity loss]]
    * [[Dowell's curves]]
  * [[Core loss]] (or iron loss]
  * [[Copper loss]] (or winding loss)
  * [[Windage loss]]
  * [[Mechanical loss]]
  * [[Transition loss]]
  * [[Switching loss]]
  * [[Resistive loss]] (Joule heating)

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**[ Electromagnetic fields ]**
  * [[Field]]
  * [[Magnetostatic field]]
  * [[Magnetic field]]
  * [[Electrostatic field]] 
  * [[Electric field]]
  * [[Electromagnetic field]]
  * [[Radiation field]]
  * [[Acceleration field]]
  * [[Thermal field]]
  * [[Maxwell equations|Maxwell's equations]]
    * [[Faraday's law of induction]]
    * [[Ampere-Maxwell circuital law]]
    * [[Gauss's law for magnetism]]
    * [[Gauss's law for electrostatics]]
    * [[Biot-Savart law]]

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**[ Coils and Windings ]** 
  * [[list_of_types_of_windings_and_coils|Winding]] ([[coil]])
    * [[Primary winding]]
    * [[Secondary winding]]
    * [[Tertiary winding]]
  * [[Bobbin]]
  * [[Winding machine]] ([[linear winding machine|linear]], [[toroidal winding machine|toroidal]])
  * [[Winding wire]]
    * [[Enamelled wire]] 
    * [[Litz wire]]
    * [[CTC]] / [[Roebel cable]]
  * [[Strand]]
  * [[Bifilar winding]]
  * [[Ayrton-Perry winding]]
  * [[Non-inductive winding]]
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**[ Inductors ]**
  * [[list_of_inductor_types|Inductor]] 
  * [[Choke]]
    * [[AC choke]]
    * [[DC choke]]
  * [[Common-mode choke]]
  * [[Coupled inductor]]
  * [[Air-cored inductor]]
  * [[Flyback inductor]]
  * [[Variable inductor]]
  * [[Polarity of inductors]]
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**[ Transformers ]**
  * [[list_of_transformer_types|Transformer]]
  * [[Autotransformer]] (Variac)
  * [[Flyback transformer]]
  * [[Current transformer]] (CT)
  * [[Voltage transformer]] (VT)
  * [[Rotational transformer]]
  * [[In-rush current]]
  * [[Laminations]]


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**[ Devices ]** 
  * [[Coil]] ([[solenoid]])
  * [[Inductor]]
  * [[Transformer]] ([[autotransformer]])
  * [[Motor]] 
  * [[Linear motor]]
  * [[Electromagnetic actuator]]
  * [[Relay]]
    * [[Reed relay]]
  * [[Magnetic sensor]]

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**[ Magnetic sensors ]**
  * [[B-coil]] ([[induction coil]], [[search coil]])
  * [[Needle-probe sensor]] 
  * [[H-coil]]
  * [[Hall-effect sensor]]
  * [[Fluxgate sensor]]
  * [[Magnetoresistive sensor]]
  * [[Magnetoelastic sensor]]
  * [[Current sensor]]
  * [[Rogowski coil]]
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**[ Electromagnetic motors ]**
  * [[DC motor]]
  * [[Polyphase motor]]
  * [[Induction motor]] (asynchronous)
  * [[Synchronous motor]]
  * [[Hysteresis motor]]
  * [[Shaded-pole motor]]
  * [[Switched-reluctance motor]]
  * [[Permanent-magnet motor]]


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==== Editorial team and contributors ====
  *  **[[user/stan_zurek|Stan Zurek]]**, Editor-in-Chief 
  * [[user/Krzysztof Chwastek]]
  * [[user/Jeff Jones]]
  * [[user/Branko Koprivica]]
  * [[user/Jeanete Leicht]]
  * Tom Taylor
  * [[https://www.aalto.fi/en/people/anouar-belahcen|Prof. Anouar Belahcen]]