61,984 articles
Magnetic sail
A magnetic sail, or magsail, is a proposed propellantless spacecraft propulsion system that deflects solar wind plasma with a superconducting loop; Andrews and Zubrin proposed it in 1988.
Magnetic skyrmion racetrack memory
Magnetic skyrmion racetrack memory is a proposed non-volatile storage technology in which nanoscale, topologically protected magnetic spin textures called skyrmions act as bits moved along a magnetic nanowire by currents.
Magnetic soft robots
Magnetic soft robots are robots made of soft polymer embedded with magnetic particles, remotely bent and propelled by external magnetic fields; millimeter-scale and tether-free, they target biomedical uses like drug delivery.
Magnetic storage
Magnetic storage, also called magnetic data storage, records digital data by magnetizing regions of a ferromagnetic material, chiefly in hard disk drives and magnetic tape.
Magnetic tape
Magnetic tape is a storage medium of thin plastic ribbon coated with magnetic particles, used for audio, video, and digital data, first commercialized for sound in the 1930s.
Magnetic wheel
A magnetic wheel is a wheel containing a permanent magnet that adheres to steel surfaces, letting robots climb walls and inspect tanks, ship hulls, and pipes without suction cups.
Magnetic wormhole
A magnetic wormhole is a laboratory device built from metamaterials that transfers a static magnetic field between two points, undetectable from outside, first demonstrated in Barcelona in 2015.
Magnetic-core memory
Magnetic-core memory, also called ferrite core memory, stores each bit in a magnetized ferrite ring; it dominated computer memory from the mid-1950s to the early 1970s.
Magnetically responsive elastomers
Magnetically responsive elastomers, also called magnetic elastomers, are composites of magnetic particles embedded in a soft polymer such as silicone, allowing remote actuation by an external magnetic field.
Magnetized target fusion
Magnetized target fusion (MTF), also called magneto-inertial fusion, is a fusion approach that compresses a magnetized plasma with an imploding liner, needing far slower implosions than inertial confinement fusion.
Magneto
A magneto is a permanent-magnet alternating-current generator that produces high-voltage pulses to fire spark plugs, first built by Hippolyte Pixii in 1832 and still standard in aircraft ignition.
Magneto and common-battery switchboards
Magneto and common-battery switchboards are manual telephone exchange boards distinguished by power source: magneto subscribers crank a generator and carry local batteries, while common-battery boards draw power from the exchange.
Magnetohydrodynamic drive
A magnetohydrodynamic drive, also known as an MHD drive or caterpillar drive, is a marine propulsion system that pushes a vessel by magnetically pumping seawater, with no moving parts.
Magnetohydrodynamic generator
A magnetohydrodynamic generator converts the thermal energy of a hot conducting fluid directly into electricity by passing it through a magnetic field, with no turbine.
Magnetoplasmadynamic thruster
A magnetoplasmadynamic thruster, also known as an MPD thruster or Lorentz Force Accelerator, is an electric spacecraft thruster that accelerates plasma propellant electromagnetically via Lorentz forces.
Magnetoresistive head
A magnetoresistive head is a hard disk drive read sensor that detects data bits through a change in electrical resistance rather than induced voltage, introduced by IBM in 1990.
Magnetoresistive random-access memory
Magnetoresistive random-access memory (MRAM) is non-volatile memory storing each bit as magnetic orientation in a magnetic tunnel junction, combining nanosecond speed with very high endurance.
Magnetorheological actuator
A magnetorheological actuator is a semi-active device that produces controllable force or torque by exposing magnetorheological fluid to a magnetic field, used in dampers, brakes, clutches, and haptics.
Magnetorheological elastomer
A magnetorheological elastomer (MRE) is a smart composite of magnetic particles in an elastic matrix whose stiffness and damping change rapidly and reversibly under a magnetic field, used in vibration absorbers, actuators, and soft robotics.
Magnetorquer
A magnetorquer, also called a magnetic torquer or torque rod, is a spacecraft device that rotates the craft by interacting its coil-generated field with Earth's magnetic field.
Magnetostrictive actuator
A magnetostrictive actuator is a solid-state device producing mechanical motion through magnetostriction, most often a Terfenol-D rod that changes length when a coil applies a magnetic field.
Magnetostrictive linear position sensor
A magnetostrictive linear position sensor is a non-contact displacement sensor that measures a moving magnet's position via an ultrasonic pulse in a waveguide, used widely in hydraulic cylinders.
Magnetron sputtering
Magnetron sputtering, also known as magnetron sputter deposition, is a physical vapor deposition technique developed in the 1960s and 1970s that deposits thin films of metals, oxides, and nitrides.
Magnifying glass
A magnifying glass, or hand lens, is a single convex lens held close to the eye that forms an enlarged virtual image of an object within its focal length.
Magnite
Magnite, formed in 2020 by the merger of Rubicon Project and Telaria, is an American ad tech company operating the world's largest independent sell-side platform for publishers and streaming services.
Magnolia Oil & Gas
Magnolia Oil & Gas Corporation is a Houston-based independent oil and gas exploration and production company targeting the Eagle Ford Shale and Austin Chalk formations in South Texas.
Magnon transistor
A magnon transistor is a three-terminal device that controls the flow of magnons, the quasiparticles of spin waves, first demonstrated in 2014 in yttrium iron garnet by Chumak, Serga, and Hillebrands.
Magnora Data Center
Magnora Data Center ASA is a Nordic data center project developer spun off from Norway's renewable-energy group Magnora ASA, listed on Euronext Growth Oslo in June 2026.
Magnox
Magnox was a class of first-generation British nuclear reactors, carbon dioxide-cooled and graphite-moderated, burning natural uranium in magnesium alloy cladding; Calder Hall, the first station, opened in 1956.
Magnum (Eemshaven) power station
The Magnum power station at Eemshaven is a natural gas-fired plant in Groningen, the Netherlands, commissioned in 2013 with three combined cycle units totaling 1,410 MW.