All articles starting with E

Electrolux

Electrolux is a Swedish multinational manufacturer of household and professional appliances, founded by Axel Wenner-Gren in Stockholm in 1919 and selling under the Electrolux, AEG, and Frigidaire brands in around 120 markets.

Electrolysis

Electrolysis is the use of an electric current to drive otherwise nonspontaneous redox reactions, typically splitting compounds into their elements, a process Michael Faraday quantified in the early 1830s.

Electrolysis of water

Electrolysis of water, also called water electrolysis, is the use of electricity to split water into hydrogen and oxygen in a device called an electrolyzer.

Electrolyte

An electrolyte, also called an ionic solution, is a conducting medium in which electric current flows through the movement of ions; electrolytes make electrochemical cells and batteries work.

Electrolyte additive

An electrolyte additive is a minor component, a few tenths of a percent to a few weight percent, dissolved in lithium-ion battery electrolytes to improve stability, cycle life, and safety.

Electrolyte and drug effects on the ECG

Electrolyte and drug effects on the ECG are the characteristic electrocardiogram changes caused by potassium, calcium, and magnesium disturbances and by QT-prolonging drugs like sotalol.

Electrolyte imbalance

Electrolyte imbalance: abnormal blood levels of sodium, potassium, calcium, magnesium, chloride, or bicarbonate. Caused by vomiting, diarrhea, sweating, drugs, or organ disease; treated by repletion, dilution, or dialysis.

Electrolyte-gated synaptic transistor

An electrolyte-gated synaptic transistor is a three-terminal device where an ion-conducting electrolyte acts as gate dielectric, moving ions to emulate synaptic plasticity for neuromorphic computing and bioelectronics.

Electrolyte-gated transistor biosensor

An electrolyte-gated transistor biosensor replaces a transistor's solid gate dielectric with an electrolyte, so biomolecule binding shifts drain current, enabling label-free diagnostics below 1 V.

Electrolytic capacitor

An electrolytic capacitor, also known as an electrolytic condenser or E-cap, is a polarized capacitor with an electrolyte cathode, offering very high capacitance per volume for power supplies.

Electrolytic deposition

Electrolytic deposition is an electrochemical fabrication method in which an external current through an electrolyte deposits metal or ceramic coatings onto conductive substrates, the workpiece serving as the cathode.

Electrolytic oxidation

Electrolytic oxidation is an electrochemical method that oxidizes dissolved or adsorbed substances at an anode by passing current through an electrolyte, used for organic electrosynthesis and mineralizing pollutants in wastewater.

Electrolytic reduction

Electrolytic reduction is a conservation treatment that makes a metal artifact the cathode of an electrolytic cell, removing chlorides chiefly from iron recovered from shipwrecks.

Electromagnet

An electromagnet is a magnet whose field comes from electric current in a wire coil, often around an iron core, and can be switched on and off.

Electromagnetic absorption by water

Electromagnetic absorption by water, also called water absorption, is the conversion of electromagnetic radiation into molecular motion and heat by liquid, vapor, or solid water.

Electromagnetic acoustic transducer

An electromagnetic acoustic transducer (EMAT) is a non-contact device that generates ultrasound in conducting or ferromagnetic materials without couplant, used for non-destructive testing of hot, coated, or corroded surfaces.

Electromagnetic action and Lagrangian formulation

The electromagnetic action and Lagrangian formulation packages all of classical electrodynamics into one Lorentz-scalar action; varying it gives the inhomogeneous Maxwell equations, and Noether's theorem gives energy and momentum conservation.

Electromagnetic Aircraft Launch System

The Electromagnetic Aircraft Launch System (EMALS) is the US Navy's electromagnetic catapult that launches carrier aircraft with a linear induction motor, replacing steam catapults on Ford-class carriers.

Electromagnetic and rare probes of quark–gluon plasma

Electromagnetic and rare probes are signals of the quark–gluon plasma that leave the collision zone unscattered, comprising dileptons, real photons, quarkonium suppression, and strangeness enhancement, probing deconfinement and chiral symmetry restoration.

Electromagnetic articulography

Electromagnetic articulography (EMA) is a biomedical technique that tracks tongue, lip, and jaw movements during speech with sensor coils, supporting phonetic research and clinical assessment.

Electromagnetic clutch

An electromagnetic clutch is a clutch that transmits or interrupts torque between shafts on the same axis through electromagnetic operation, controlled electrically without mechanical linkages, as in automotive air-conditioning compressors.

Electromagnetic coil

An electromagnetic coil, also called a magnetic coil, is insulated wire wound into loops so current produces a concentrated magnetic field or an induced voltage.

Electromagnetic compaction of metal powders

Electromagnetic compaction of metal powders, best known as magnetic pulse compaction (MPC), is a powder metallurgy technique that compresses metal powder to near full density in under a millisecond.

Electromagnetic compatibility

Electromagnetic compatibility (EMC) is the ability of equipment to function in its electromagnetic environment without disturbing other equipment, studied as both an equipment characteristic and an engineering discipline.

Electromagnetic field

An electromagnetic field, or EM field, is a physical field combining an electric and a magnetic field, exerting the Lorentz force on electric charges and described by Maxwell's equations.

Electromagnetic flowmeter

An electromagnetic flowmeter, also called a magnetic flowmeter or magmeter, measures the flow of conductive liquids, causing no pressure loss because it adds no obstruction to the pipe.

Electromagnetic follow-up of gravitational-wave events

Electromagnetic follow-up of gravitational-wave events is the search with optical, radio, X-ray, and other telescopes for light from gravitational-wave sources, most successfully for GW170817 in 2017.

Electromagnetic forming

Electromagnetic forming (EMF) is a high-speed metal forming process that shapes conductive sheet or tube workpieces with pulsed magnetic forces and no tool contact, used most often to join tubes.

Electromagnetic four-potential

The electromagnetic four-potential is a four-vector combining the electric scalar potential and magnetic vector potential, the natural variable of covariant electrodynamics, with gauge freedom leaving the fields unchanged.