Phenomenon · phenomenon:electromagnetic-induction
Electromagnetic induction
A changing magnetic flux through a circuit induces an electromotive force equal to the rate of change of flux. The working principle of every rotating generator.
Atlas record: 12 claims reference this phenomenon — 7 established and 5 demonstrated.
Explorerelations · matrix context · routes · sources · cite
conditions: conductor required · magnetic field required
12claims87enumerated routes7routes with complete-composition evidence23candidate routes not searched9cited sources
Relations
drives · 3
- a magnet moving relative to a coil
- any time-varying flux through a loop, from motion or from an AC source
- the changing flux threads a conducting loop
ℰ = −dΦ/dt · rate of change [1/s]
produces · 1
couples to · 1
- magnetised ferrofluid advects through a closed loop wound with induction coils, so the flux linked by each coil changes as magnetised packets pass
- a permanent-magnet bias field keeps the fluid magnetised where it moves past the coils
One lab-scale prototype (Chiolerio et al. 2020): a toroidal loop with poloidal or mixed poloidal/toroidal windings, water carrier with ferrofluid packets, up to 10.4 μW per kelvin. One paper is demonstrated, not established.
member of · 1
implemented by · 6
Matrix context
D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.
Enumerated routes through this · 87 (showing 24)
- Thermomagnetic hydrodynamic energy harvester3/4 est · demonstrated
- Thermomagnetic generator4/5 est · demonstrated
- Electromagnetic vibration harvester5/5 est · demonstrated
- Marangoni rotor mini-generator5/5 est · demonstrated
- Evaporation-driven oscillator generator4/5 est · demonstrated
- Waterwheel electric generator (pico hydro)5/5 est · demonstrated
- Magnetostrictive vibration harvester7/7 est · demonstrated
- Changing magnetic flux → Electromagnetic induction → Charge carriers → Electrical work3/3 est · candidate
- Temperature gradient → Marangoni effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · extends a recorded pathway
- Temperature gradient → Thermal shape-memory effect → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · extends a recorded pathway
- Temperature gradient → Working-fluid expansion (heat-engine cycle) → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · candidate
- Temperature gradient → Ocean thermal energy conversion → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work3/5 est · extends a recorded pathway
- Pressure gradient → Aerodynamic and hydrodynamic lift → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · candidate
- Mechanical stress or strain → Villari effect → Changing magnetic flux → Electromagnetic induction → Charge carriers → Electrical work5/5 est · extends a recorded pathway
- Bulk fluid flow → Aerodynamic and hydrodynamic lift → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · candidate
- Bulk fluid flow → Ocean wave motion → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work4/5 est · extends a recorded pathway
- Incident radiation flux → Radiation pressure → Mechanical motion → Electromagnetic induction → Charge carriers → Electrical work5/5 est · unresolved handoff
- Chemical potential difference → Combustion → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · extends a recorded pathway
- Electric potential difference → Peltier effect → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · same energy form
- Electric potential difference → Ettingshausen effect → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · same energy form
- Incident radiation flux → Photothermal absorption → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · extends a recorded pathway
- Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fission → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work5/6 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fusion → Temperature gradient → Thermomagnetic convection → Electromagnetic induction → Charge carriers → Electrical work3/6 est · extends a recorded pathway
Cited sources · 9
- [1]M. Faraday. Experimental researches in electricity (1832)
- [2]L. D. Landau, E. M. Lifshitz, L. P. Pitaevskii. Electrodynamics of Continuous Media (Course of Theoretical Physics, Vol. 8, 2nd ed.) (1984)
- [3]S. P. Beeby, et al.. A micro electromagnetic generator for vibration energy harvesting (2007)
- [4]H. B. Radousky, H. Liang. Energy harvesting: an integrated view of materials, devices and applications (2012)
- [5]S. L. Dixon, C. A. Hall. Fluid Mechanics and Thermodynamics of Turbomachinery (7th ed.) (2014)
- [6]M. Frenkel et al.. Mini-Generator of Electrical Power Exploiting the Marangoni Flow Inspired Self-Propulsion (2019)
- [7]A. Chiolerio et al.. Waste heat to power conversion by means of thermomagnetic hydrodynamic energy harvester (2020)
- [8]X. Chen et al.. Scaling up nanoscale water-driven energy conversion into evaporation-driven engines and generators (2015)
- [9]M. Asim et al.. Design and Parametric Optimization of the High-Speed Pico Waterwheel for Rural Electrification of Pakistan (2022)
Cite this entity
Physical Transformation Atlas (2026). entity phenomenon:electromagnetic-induction: Electromagnetic induction. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/phenomenon/electromagnetic-induction
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