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Magnetic 3D bioprinting is a process that utilizes biocompatible magnetic nanoparticles to print cells into 3D structures or 3D cell cultures . In this process, cells are tagged with magnetic nanoparticles, thus making them magnetic. [ 1 ] [ 2 ] Once magnetic, these cells can be rapidly printed into specific 3D pattern... | https://en.wikipedia.org/wiki/Magnetic_3D_bioprinting |
The Magnetic Prandtl number ( Pr m ) is a dimensionless quantity occurring in magnetohydrodynamics which approximates the ratio of momentum diffusivity ( viscosity ) and magnetic diffusivity . [ 1 ] It is defined as:
where:
At the base of the Sun 's convection zone the Magnetic Prandtl number is approximately 10 −2 ,... | https://en.wikipedia.org/wiki/Magnetic_Prandtl_number |
Magnetic Reference Laboratory (MRL) is an American company founded in 1972. They produce and sell calibration tapes [ 1 ] for analog audio magnetic tape reproducers in the open reel format. It was announced on 11 November 2023 that the company would cease business on 1 December 2023. [ 2 ]
On December 7, 2023 MRL anno... | https://en.wikipedia.org/wiki/Magnetic_Reference_Laboratory |
In magnetohydrodynamics , the magnetic Reynolds number ( R m ) is a dimensionless quantity that estimates the relative effects of advection or induction of a magnetic field by the motion of a conducting medium to the magnetic diffusion . It is the magnetic analogue of the Reynolds number in fluid mechanics and is typic... | https://en.wikipedia.org/wiki/Magnetic_Reynolds_number |
In thermodynamics and thermal physics , the theoretical formulation of magnetic systems entails expressing the behavior of the systems using the Laws of Thermodynamics . Common magnetic systems examined through the lens of Thermodynamics are ferromagnets and paramagnets as well as the ferromagnet to paramagnet phase tr... | https://en.wikipedia.org/wiki/Magnetic_Thermodynamic_Systems |
A magnetic alloy is a combination of various metals from the periodic table such as ferrite that exhibits magnetic properties such as ferromagnetism . Typically the alloy contains one of the three main magnetic elements (which appear on the Bethe-Slater curve ): iron (Fe) , nickel (Ni) , or cobalt (Co) . However, alloy... | https://en.wikipedia.org/wiki/Magnetic_alloy |
In condensed matter physics , magnetic anisotropy describes how an object's magnetic properties can be different depending on direction . In the simplest case, there is no preferential direction for an object's magnetic moment . It will respond to an applied magnetic field in the same way, regardless of which direction... | https://en.wikipedia.org/wiki/Magnetic_anisotropy |
Magnetic braking is a theory explaining the loss of stellar angular momentum due to material getting captured by the stellar magnetic field and thrown out at great distance from the surface of the star. It plays an important role in the evolution of binary star systems.
The currently accepted theory of the a planetary... | https://en.wikipedia.org/wiki/Magnetic_braking_(astronomy) |
A magnetic chip detector is an electronic instrument that attracts ferromagnetic particles (mostly iron chips). It is mainly used in aircraft engine oil and helicopter gearbox chip detection systems. Chip detectors can provide an early warning of an impending engine failure and thus greatly reduce the cost of an engine... | https://en.wikipedia.org/wiki/Magnetic_chip_detector |
A magnetic circuit is made up of one or more closed loop paths containing a magnetic flux . The flux is usually generated by permanent magnets or electromagnets and confined to the path by magnetic cores consisting of ferromagnetic materials like iron, although there may be air gaps or other materials in the path. ... | https://en.wikipedia.org/wiki/Magnetic_circuit |
Magnetic circular dichroism ( MCD ) is the differential absorption of left and right circularly polarized (LCP and RCP) light, induced in a sample by a strong magnetic field oriented parallel to the direction of light propagation. MCD measurements can detect transitions which are too weak to be seen in conventional opt... | https://en.wikipedia.org/wiki/Magnetic_circular_dichroism |
A magnetic core is a piece of magnetic material with a high magnetic permeability used to confine and guide magnetic fields in electrical, electromechanical and magnetic devices such as electromagnets , transformers , electric motors , generators , inductors , loudspeakers , magnetic recording heads , and magnetic asse... | https://en.wikipedia.org/wiki/Magnetic_core |
Magnetic declination (also called magnetic variation ) is the angle between magnetic north and true north at a particular location on the Earth's surface. The angle can change over time due to polar wandering .
Magnetic north is the direction that the north end of a magnetized compass needle points, which corresponds ... | https://en.wikipedia.org/wiki/Magnetic_declination |
The magnetic detector or Marconi magnetic detector , sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century. [ 1 ] [ 2 ] Developed in 1902 by radio pioneer Guglielmo M... | https://en.wikipedia.org/wiki/Magnetic_detector |
Magnetic deviation is the error induced in a compass by local magnetic fields , which must be allowed for, along with magnetic declination , if accurate bearings are to be calculated. (More loosely, "magnetic deviation" is used by some to mean the same as "magnetic declination". This article is about the former meaning... | https://en.wikipedia.org/wiki/Magnetic_deviation |
Magnetic dip , dip angle, or magnetic inclination is the angle made with the horizontal by Earth's magnetic field lines . This angle varies at different points on Earth's surface. Positive values of inclination indicate that the magnetic field of Earth is pointing downward, into Earth, at the point of measurement, and ... | https://en.wikipedia.org/wiki/Magnetic_dip |
In electromagnetism , a magnetic dipole is the limit of either a closed loop of electric current or a pair of poles as the size of the source is reduced to zero while keeping the magnetic moment constant.
It is a magnetic analogue of the electric dipole , but the analogy is not perfect. In particular, a true magnetic ... | https://en.wikipedia.org/wiki/Magnetic_dipole |
Magnetic dipole–dipole interaction , also called dipolar coupling , refers to the direct interaction between two magnetic dipoles . Roughly speaking, the magnetic field of a dipole goes as the inverse cube of the distance, and the force of its magnetic field on another dipole goes as the first derivative of the magneti... | https://en.wikipedia.org/wiki/Magnetic_dipole–dipole_interaction |
The magnetic flux , represented by the symbol Φ , threading some contour or loop is defined as the magnetic field B multiplied by the loop area S , i.e. Φ = B ⋅ S . Both B and S can be arbitrary, meaning that the flux Φ can be as well but increments of flux can be quantized. The wave function can be multivalued as it h... | https://en.wikipedia.org/wiki/Magnetic_flux_quantum |
In plasma physics , magnetic helicity is a measure of the linkage, twist, and writhe of a magnetic field . [ 1 ] [ 2 ]
Magnetic helicity is a useful concept in the analysis of systems with extremely low resistivity, such as astrophysical systems. When resistivity is low, magnetic helicity is conserved over longer time... | https://en.wikipedia.org/wiki/Magnetic_helicity |
Magnetic hysteresis occurs when an external magnetic field is applied to a ferromagnet such as iron and the atomic dipoles align themselves with it. Even when the field is removed, part of the alignment will be retained: the material has become magnetized . Once magnetized, the magnet will stay magnetized indefinitely.... | https://en.wikipedia.org/wiki/Magnetic_hysteresis |
Magnetic immunoassay ( MIA ) is a type of diagnostic immunoassay using magnetic beads as labels in lieu of conventional enzymes ( ELISA ), radioisotopes ( RIA ) or fluorescent moieties ( fluorescent immunoassays ) [ 1 ] to detect a specified analyte . MIA involves the specific binding of an antibody to its antigen, whe... | https://en.wikipedia.org/wiki/Magnetic_immunoassay |
In the context of nuclear magnetic resonance (NMR), the term magnetic inequivalence refers to the distinction between magnetically active nuclear spins by their NMR signals, owing to a difference in either chemical shift ( magnetic inequivalence by the chemical shift criterion ) or spin–spin coupling ( J-coupling ) ( m... | https://en.wikipedia.org/wiki/Magnetic_inequivalence |
Magnetic isotope effects arise when a chemical reaction involves spin-selective processes, such as the radical pair mechanism . The result is that some isotopes react preferentially, depending on their nuclear spin quantum number I. This is in contrast to more familiar mass-dependent isotope effects . [ 1 ] [ 2 ] [ 3 ]... | https://en.wikipedia.org/wiki/Magnetic_isotope_effect |
A magnetic level gauge is a level gauge based on a float device that can experience floatation in both high and low density fluids. Magnetic level gauges may also be designed to accommodate severe environmental conditions up to 210 bars at 370 °C.
Unlike a sight glass , magnetic level gauges do not need to be transpar... | https://en.wikipedia.org/wiki/Magnetic_level_gauge |
In the field of astronomy , the magnetic midnight of the North or South Magnetic Pole occurs when the pole is exactly between the sun and an observer on Earth's surface. At that moment, the pole's aurora reaches its largest extent. [ 1 ]
Because Earth's magnetic poles do not coincide with its geographical poles —the a... | https://en.wikipedia.org/wiki/Magnetic_midnight |
In astrophysics , a magnetic mirror point is a point where the motion of a charged particle trapped in a magnetic field (such as the (approximately) dipole field of the Earth ) reverses its direction. More precisely, it is the point where the projection of the particle's velocity vector in the direction of the field ... | https://en.wikipedia.org/wiki/Magnetic_mirror_point |
In electromagnetism , the magnetic moment or magnetic dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic field . The magnetic dipole moment of an object determines the magnitude of torque the object experiences in a given magnetic field. When the sa... | https://en.wikipedia.org/wiki/Magnetic_moment |
In particle physics , a magnetic monopole is a hypothetical particle that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). [ 1 ] [ 2 ] A magnetic monopole would have a net north or south "magnetic charge". Modern interest in the concept stems from particle theories , ... | https://en.wikipedia.org/wiki/Magnetic_monopole |
Magnetic pulsations are extremely low frequency disturbances in the Earth's magnetosphere driven by its interactions with the solar wind . [ 1 ] These variations in the planet's magnetic field can oscillate for multiple hours when a solar wind driving force strikes a resonance. [ 2 ] This is a form of Kelvin–Helmholtz ... | https://en.wikipedia.org/wiki/Magnetic_pulsations |
Magnetic reluctance , or magnetic resistance , is a concept used in the analysis of magnetic circuits . It is defined as the ratio of magnetomotive force (mmf) to magnetic flux . It represents the opposition to magnetic flux, and depends on the geometry and composition of an object.
Magnetic reluctance in a magnetic ... | https://en.wikipedia.org/wiki/Magnetic_reluctance |
Magnetic resonance is a process by which a physical excitation ( resonance ) is set up via magnetism .
This process was used to develop magnetic resonance imaging (MRI) and nuclear magnetic resonance spectroscopy (NMRS) technology.
It is also being used to develop nuclear magnetic resonance quantum computers .
The f... | https://en.wikipedia.org/wiki/Magnetic_resonance |
In quantum mechanics , magnetic resonance is a resonant effect that can appear when a magnetic dipole is exposed to a static magnetic field and perturbed with another, oscillating electromagnetic field . Due to the static field, the dipole can assume a number of discrete energy eigenstates , depending on the value of i... | https://en.wikipedia.org/wiki/Magnetic_resonance_(quantum_mechanics) |
Magnetic resonance force microscopy ( MRFM ) is an imaging technique that acquires magnetic resonance images ( MRI ) at nanometer scales, and possibly at atomic scales in the future. MRFM is potentially able to observe protein structures which cannot be seen using X-ray crystallography and protein nuclear magnetic reso... | https://en.wikipedia.org/wiki/Magnetic_resonance_force_microscopy |
A magnetic shape-memory alloy (MSMA) is a type of smart material that can undergo significant and reversible changes in shape in response to a magnetic field. This behavior arises due to a combination of magnetic and shape-memory properties within the alloy, allowing it to produce mechanical motion or force under magne... | https://en.wikipedia.org/wiki/Magnetic_shape-memory_alloy |
In solid state physics , the magnetic space groups , or Shubnikov groups , are the symmetry groups which classify the symmetries of a crystal both in space, and in a two-valued property such as electron spin . To represent such a property, each lattice point is colored black or white, [ 1 ] and in addition to the usual... | https://en.wikipedia.org/wiki/Magnetic_space_group |
The term magnetic structure of a material pertains to the ordered arrangement of magnetic spins, typically within an ordered crystallographic lattice . Its study is a branch of solid-state physics .
Most solid materials are non-magnetic, that is, they do not display a magnetic structure. Due to the Pauli exclusion pri... | https://en.wikipedia.org/wiki/Magnetic_structure |
In electromagnetism , the magnetic susceptibility (from Latin susceptibilis ' receptive ' ; denoted χ , chi ) is a measure of how much a material will become magnetized in an applied magnetic field . It is the ratio of magnetization M ( magnetic moment per unit volume ) to the applied magnetic field intensity H . This ... | https://en.wikipedia.org/wiki/Magnetic_susceptibility |
In physics , magnetic topological insulators are three dimensional magnetic materials with a non-trivial topological index protected by a symmetry other than time-reversal . [ 1 ] [ 2 ] [ 3 ] [ 4 ] [ 5 ] This type of material conducts electricity on its outer surface, but its volume behaves like an insulator. [ 6 ]
In... | https://en.wikipedia.org/wiki/Magnetic_topological_insulator |
In experimental physics , a magnetic trap is an apparatus which uses a magnetic field gradient to trap neutral particles with magnetic moments . Although such traps have been employed for many purposes in physics research, they are best known as the last stage in cooling atoms to achieve Bose–Einstein condensation . Th... | https://en.wikipedia.org/wiki/Magnetic_trap_(atoms) |
Magnetic tweezers (MT) are scientific instruments for the manipulation and characterization of biomolecules or polymers . These apparatus exert forces and torques to individual molecules or groups of molecules. It can be used to measure the tensile strength or the force generated by molecules.
Most commonly magnetic t... | https://en.wikipedia.org/wiki/Magnetic_tweezers |
Magnetic water treatment (also known as anti-scale magnetic treatment or AMT ) is a disproven method of reducing the effects of hard water by passing it through a magnetic field as a non-chemical alternative to water softening . A 1996 study by Lawrence Livermore National Laboratory found no significant effect of magne... | https://en.wikipedia.org/wiki/Magnetic_water_treatment |
Magnetically assisted slip casting is a manufacturing technique that uses anisotropic stiff nanoparticle platelets in a ceramic , metal or polymer functional matrix to produce [ 1 ] layered objects that can mimic natural objects such as nacre . Each layer of platelets is oriented in a different direction, giving the re... | https://en.wikipedia.org/wiki/Magnetically_assisted_slip_casting |
In electrical engineering , a magnetically-controlled shunt reactor ( MCSR , CSR ) represents electrotechnical equipment purposed for compensation of reactive power and stabilization of voltage level in high voltage (HV) electric networks rated for voltage classes 36 – 750 kV. MCSR is a shunt -type static device with s... | https://en.wikipedia.org/wiki/Magnetically_controlled_shunt_reactor |
In classical electromagnetism , magnetization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. Accordingly, physicists and engineers usually define magnetization as the quantity of magnetic moment per unit volume. [ 1 ] It is represented by a pseudov... | https://en.wikipedia.org/wiki/Magnetization |
In classical electromagnetism , magnetization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. Accordingly, physicists and engineers usually define magnetization as the quantity of magnetic moment per unit volume. [ 1 ] It is represented by a pseudov... | https://en.wikipedia.org/wiki/Magnetization_reversal |
Magnetic roasting technology refers to the process of heating materials or ores under specific atmospheric conditions to induce chemical reactions. [ 1 ] This process selectively converts weakly magnetic iron minerals such as hematite (Fe 2 O 3 ), siderite (FeCO 3 ), and limonite (Fe 2 O 3 ·nH 2 O) into strongly magnet... | https://en.wikipedia.org/wiki/Magnetization_roasting_technology |
Magnetization transfer (MT), in NMR and MRI , refers to the transfer of nuclear spin polarization and/or spin coherence from one population of nuclei to another population of nuclei, and to techniques that make use of these phenomena. [ 1 ] There is some ambiguity regarding the precise definition of magnetization trans... | https://en.wikipedia.org/wiki/Magnetization_transfer |
A magneto-optic effect is any one of a number of phenomena in which an electromagnetic wave propagates through a medium that has been altered by the presence of a quasistatic magnetic field . In such a medium, which is also called gyrotropic or gyromagnetic , left- and right-rotating elliptical polarizations can prop... | https://en.wikipedia.org/wiki/Magneto-optic_effect |
In atomic, molecular, and optical physics , a magneto-optical trap ( MOT ) is an apparatus which uses laser cooling and a spatially varying magnetic field to create a trap which can produce samples of cold neutral atoms . Temperatures achieved in a MOT can be as low as several microkelvins , depending on the atomic spe... | https://en.wikipedia.org/wiki/Magneto-optical_trap |
The Magneto Inductive Remote Activation Munition System (MI-RAMS) is a variant of the Remote Munition System (RAMS) that uses electromagnetic induction to control electronic equipment, including demolition charges , munitions , and active barriers. [ 1 ] The handheld MI-RAMS receiver consists of a box-shaped device wit... | https://en.wikipedia.org/wiki/Magneto_Inductive_Remote_Activation_Munition_System |
Magnetoactive phase transitional matter (MPTM) are miniature robotic machines that can change their shape by switching between liquid and solid state. [ 1 ]
MPTMs consist of liquid metal embedded with a neodymium magnet . [ 1 ] MPTMs can be programmed to change shape when needed, by using heating and ambient cooling. ... | https://en.wikipedia.org/wiki/Magnetoactive_phase_transitional_matter |
Magnetobiology is the study of biological effects of mainly weak static and low-frequency magnetic fields, which do not cause heating of tissues. Magnetobiological effects have unique features that obviously distinguish them from thermal effects; often they are observed for alternating magnetic fields just in separat... | https://en.wikipedia.org/wiki/Magnetobiology |
The magnetocaloric effect ( MCE , from magnet and calorie ) is a scientific phenomenon in which certain materials warm up when a magnetic field is applied. The warming is due to changes in the internal state of the material releasing heat. When the magnetic field is removed, the material returns to its original state, ... | https://en.wikipedia.org/wiki/Magnetocaloric_effect |
Magnetocapacitance is a property of some dielectric , insulating materials, and metal–insulator–metal heterostructures that exhibit a change in the value of their capacitance when an external magnetic field is applied to them. Magnetocapacitance can be an intrinsic property of some dielectric materials, such as multife... | https://en.wikipedia.org/wiki/Magnetocapacitance |
Magnetochromism is the term applied when a chemical compound changes colour under the influence of a magnetic field . In particular the magneto-optical effects exhibited by complex mixed metal compounds are called magnetochromic when they occur in the visible region of the spectrum . Examples include K2V3O8, lithium mo... | https://en.wikipedia.org/wiki/Magnetochromism |
In physics , a ferromagnetic material is said to have magnetocrystalline anisotropy if it takes more energy to magnetize it in certain directions than in others. These directions are usually related to the principal axes of its crystal lattice . It is a special case of magnetic anisotropy . In other words, the excess ... | https://en.wikipedia.org/wiki/Magnetocrystalline_anisotropy |
In its most general form, the magnetoelectric effect (ME) denotes any coupling between the magnetic and the electric properties of a material. [ 1 ] [ 2 ] The first example of such an effect was described by Wilhelm Röntgen in 1888, who found that a dielectric material moving through an electric field would become magn... | https://en.wikipedia.org/wiki/Magnetoelectric_effect |
Magnetoelectrochemistry is a branch of electrochemistry dealing with magnetic effects in electrochemistry.
These effects have been supposed to exist since the time of Michael Faraday.
There have also been observations on the existence of Hall effect in electrolytes. Until these observations, magnetoelectrochemistry wa... | https://en.wikipedia.org/wiki/Magnetoelectrochemistry |
Magnetofection is a transfection method that uses magnetic fields to concentrate particles containing vectors to target cells in the body. [ 1 ] Magnetofection has been adapted to a variety of vectors, including nucleic acids , non-viral transfection systems, and viruses . This method offers advantages such as high tra... | https://en.wikipedia.org/wiki/Magnetofection |
Magnetofossils are the fossil remains of magnetic particles produced by magnetotactic bacteria (magnetobacteria) and preserved in the geologic record. The oldest definitive magnetofossils formed of the mineral magnetite come from the Cretaceous chalk beds of southern England, while magnetofossil reports, not considered... | https://en.wikipedia.org/wiki/Magnetofossil |
Magnetogenetics is a medical research technique whereby magnetic fields are used to affect cell function. [ 1 ]
The development of genetic technologies that can modulate cellular processes has greatly contributed to biological research. A representative example is the development of optogenetics , which is a neuromodu... | https://en.wikipedia.org/wiki/Magnetogenetics |
A magnetogravity wave is a type of plasma wave . A magnetogravity wave is an acoustic gravity wave which is associated with fluctuations in the background magnetic field . [ 1 ] In this context, gravity wave refers to a classical fluid wave, and is completely unrelated to the relativistic gravitational wave .
Magnetog... | https://en.wikipedia.org/wiki/Magnetogravity_wave |
A magnetohydrodynamic converter ( MHD converter ) is an electromagnetic machine with no moving parts involving magnetohydrodynamics , the study of the kinetics of electrically conductive fluids ( liquid or ionized gas) in the presence of electromagnetic fields . Such converters act on the fluid using the Lorentz force ... | https://en.wikipedia.org/wiki/Magnetohydrodynamic_converter |
A magnetohydrodynamic drive or MHD accelerator is a method for propelling vehicles using only electric and magnetic fields with no moving parts , accelerating an electrically conductive propellant ( liquid or gas ) with magnetohydrodynamics . The fluid is directed to the rear and as a reaction , the vehicle accelerates... | https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive |
A magnetohydrodynamic generator ( MHD generator ) is a magnetohydrodynamic converter that transforms thermal energy and kinetic energy directly into electricity . An MHD generator, like a conventional generator, relies on moving a conductor through a magnetic field to generate electric current. The MHD generator uses h... | https://en.wikipedia.org/wiki/Magnetohydrodynamic_generator |
Magnetolithography ( ML ) is a photoresist -less and photomaskless lithography method for patterning wafer surfaces. ML is based on applying a magnetic field on the substrate using paramagnetic metal masks named "magnetic masks" placed on either topside or backside of the wafer. [ 1 ] [ 2 ] Magnetic masks are analogous... | https://en.wikipedia.org/wiki/Magnetolithography |
The magnetomechanical effect is a fundamental feature of ferromagnetism. The fact that the application of external stresses alters the flux density of a magnetized ferromagnet, and thus the shape, and size of its hysteresis loops is easily changeable .
Simply, it is the phenomenon of changing the magnetic properties o... | https://en.wikipedia.org/wiki/Magnetomechanical_effects |
A magnetometer is a device that measures magnetic field or magnetic dipole moment . Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location. A compass is one such device, one that measures the direction of an ambient magnetic field, in this case,... | https://en.wikipedia.org/wiki/Magnetometer |
In physics , the magnetomotive force (abbreviated mmf or MMF , symbol F {\displaystyle {\mathcal {F}}} ) is a quantity appearing in the equation for the magnetic flux in a magnetic circuit , Hopkinson's law. [ 1 ] It is the property of certain substances or phenomena that give rise to magnetic fields : F = Φ R , {\disp... | https://en.wikipedia.org/wiki/Magnetomotive_force |
Magnetomyography ( MMG ) is a technique for mapping muscle activity by recording magnetic fields produced by electrical currents occurring naturally in the muscles , using arrays of SQUIDs (superconducting quantum interference devices). [ 1 ] It has a better capability than electromyography for detecting slow or direct... | https://en.wikipedia.org/wiki/Magnetomyography |
Magnetoresistance is the tendency of a material (often ferromagnetic ) to change the value of its electrical resistance in an externally-applied magnetic field . There are a variety of effects that can be called magnetoresistance. Some occur in bulk non-magnetic metals and semiconductors, such as geometrical magnetores... | https://en.wikipedia.org/wiki/Magnetoresistance |
A magnetorheological damper or magnetorheological shock absorber is a damper filled with magnetorheological fluid , which is controlled by a magnetic field , usually using an electromagnet . [ 1 ] [ 2 ] [ 3 ] This allows the damping characteristics of the shock absorber to be continuously controlled by varying the powe... | https://en.wikipedia.org/wiki/Magnetorheological_damper |
Magnetorheological elastomers (MREs) (also called magnetosensitive elastomers) are a class of solids that consist of polymeric matrix with embedded micro- or nano-sized ferromagnetic particles such as carbonyl iron . As a result of this composite microstructure, the mechanical properties of these materials can be contr... | https://en.wikipedia.org/wiki/Magnetorheological_elastomer |
A magnetorheological fluid ( MR fluid , or MRF ) is a type of smart fluid in a carrier fluid, usually a type of oil. When subjected to a magnetic field , the fluid greatly increases its apparent viscosity , to the point of becoming a viscoelastic solid. [ 1 ] Importantly, the yield stress of the fluid when in its activ... | https://en.wikipedia.org/wiki/Magnetorheological_fluid |
The magnetorotational instability (MRI) is a fluid instability that causes an accretion disk orbiting a massive central object to become turbulent . It arises when the angular velocity of a conducting fluid in a magnetic field decreases as the distance from the rotation center increases. It is also known as the Velikh... | https://en.wikipedia.org/wiki/Magnetorotational_instability |
In astronomy and planetary science , a magnetosphere is a region of space surrounding an astronomical object in which charged particles are affected by that object's magnetic field . [ 1 ] [ 2 ] It is created by a celestial body with an active interior dynamo .
In the space environment close to a planetary body with a... | https://en.wikipedia.org/wiki/Magnetosphere |
Magnetostatics is the study of magnetic fields in systems where the currents are steady (not changing with time). It is the magnetic analogue of electrostatics , where the charges are stationary. The magnetization need not be static; the equations of magnetostatics can be used to predict fast magnetic switching events ... | https://en.wikipedia.org/wiki/Magnetostatics |
Magnetostriction is a property of magnetic materials that causes them to change their shape or dimensions during the process of magnetization . The variation of materials' magnetization due to the applied magnetic field changes the magnetostrictive strain until reaching its saturation value, λ. The effect was first ide... | https://en.wikipedia.org/wiki/Magnetostriction |
Magnetotactic bacteria (or MTB ) are a polyphyletic group of bacteria that orient themselves along the magnetic field lines of Earth's magnetic field . [ 1 ] Discovered in 1963 by Salvatore Bellini and rediscovered in 1975 by Richard Blakemore, this alignment is believed to aid these organisms in reaching regions of op... | https://en.wikipedia.org/wiki/Magnetotactic_bacteria |
Magnetotropism is the movement or plant growth in response to the stimulus provided by the magnetic field in plants (specifically agricultural plants) around the world. As a natural environmental factor in the Earth, variations of magnetic field level causes many biological effects, including germination rate, flowerin... | https://en.wikipedia.org/wiki/Magnetotropism |
In astronomy , magnitude is a measure of the brightness of an object , usually in a defined passband . An imprecise but systematic determination of the magnitude of objects was introduced in ancient times by Hipparchus .
Magnitude values do not have a unit. The scale is logarithmic and defined such that a magnitude 1 ... | https://en.wikipedia.org/wiki/Magnitude_(astronomy) |
Magnonics is an emerging field of modern magnetism , which can be considered a sub-field of modern solid state physics . [ 1 ] Magnonics combines the study of waves and magnetism. Its main aim is to investigate the behaviour of spin waves in nano-structure elements. In essence, spin waves are a propagating re-ordering ... | https://en.wikipedia.org/wiki/Magnonics |
Magnotech is a type of biosensor using magnetic nanoparticles to measure target molecules in blood and saliva in a matter of minutes. The technology is based on magnetic nanoparticles that are actuated by magnetic fields. [ 1 ]
A cartridge is inserted into a hand-held analyzer. The cartridge is constructed entirely fr... | https://en.wikipedia.org/wiki/Magnotech |
In alchemy , the Magnum Opus or Great Work is a term for the process of working with the prima materia to create the philosopher's stone . It has been used to describe personal and spiritual transmutation in the Hermetic tradition , attached to laboratory processes and chemical color changes, used as a model for the in... | https://en.wikipedia.org/wiki/Magnum_opus_(alchemy) |
Magnus Gens is a Swedish engineer known for his development of a moose crash test dummy in his 2001 master's thesis . In 2022, the thesis earned him the Ig Nobel Prize for safety engineering , which honors unusual but important research.
In 1994, Gens began working on his master's thesis for the KTH Royal Institute of... | https://en.wikipedia.org/wiki/Magnus_Gens |
The Magnus Hirschfeld Medal is awarded by the German Society for Social-Scientific Sexuality Research (DGSS) [ 1 ] for outstanding service to sexual science , granted in the categories "Sexual Research" and "Sexual Reform". It is named in honour of German sexology pioneer Magnus Hirschfeld [ 2 ] (though DGSS diverges f... | https://en.wikipedia.org/wiki/Magnus_Hirschfeld_Medal |
The Magnus effect is a phenomenon that occurs when a spinning object is moving through a fluid . A lift force acts on the spinning object and its path may be deflected in a manner not present when it is not spinning. The strength and direction of the Magnus force is dependent on the speed and direction of the rotation ... | https://en.wikipedia.org/wiki/Magnus_effect |
Magnussen model is a popular method for computing reaction rates as a function of both mean concentrations and turbulence levels (Magnussen and Hjertager). [ 1 ] Originally developed for combustion , it can also be used for liquid reactions by tuning some of its parameters. The model consists of rates calculated by two... | https://en.wikipedia.org/wiki/Magnussen_model |
Magway is a UK startup noted for its e-commerce and freight delivery system that aims to transport goods in pods that fit in new and existing 90 cm (35 in)-diameter pipes, underground and overground, reducing road congestion and air pollution . [ 1 ] It uses linear magnetic motors to shuttle pods, designed to accommoda... | https://en.wikipedia.org/wiki/Magway_Ltd |
In mathematics, a Maharam algebra is a complete Boolean algebra with a continuous submeasure (defined below). They were introduced by Dorothy Maharam ( 1947 ).
A continuous submeasure or Maharam submeasure on a Boolean algebra is a real-valued function m such that
A Maharam algebra is a complete Boolean algebra with ... | https://en.wikipedia.org/wiki/Maharam_algebra |
The Mahathir Science Award is an award for outstanding contributions in science and technology that address issues related to the tropics. [ 1 ] [ 2 ] The Foundation was established 17 August 2004 in honour of the former Prime Minister of Malaysia Mahathir Mohamad . [ 3 ] [ 4 ] It is presented by the Mahathir Science A... | https://en.wikipedia.org/wiki/Mahathir_Science_Award |
Mahesha Thakura was the ruler of Mithila in the 16th century. He made his capital at Bhaur which is in the northwest of Sarisab-Pahi and Rajgram. He was also wrote some treatises and commentaries on astronomy and Indian philosophy . He was gifted the Kingdom of Mithila for his scholarly wisdom by the Mughal emperor . H... | https://en.wikipedia.org/wiki/Mahesha_Thakura |
In mathematics , Mahler's compactness theorem , proved by Kurt Mahler ( 1946 ), is a foundational result on lattices in Euclidean space , characterising sets of lattices that are 'bounded' in a certain definite sense. Looked at another way, it explains the ways in which a lattice could degenerate ( go off to infinity )... | https://en.wikipedia.org/wiki/Mahler's_compactness_theorem |
In mathematics , Mahler's inequality , named after Kurt Mahler , states that the geometric mean of the term-by-term sum of two finite sequences of positive numbers is greater than or equal to the sum of their two separate geometric means:
when x k , y k > 0 for all k .
By the inequality of arithmetic and geometric me... | https://en.wikipedia.org/wiki/Mahler's_inequality |
In mathematics, Mahler's theorem , introduced by Kurt Mahler ( 1958 ), expresses any continuous p -adic function as an infinite series of certain special polynomials . It is the p -adic counterpart to the Stone-Weierstrass theorem for continuous real-valued functions on a closed interval.
Let ( Δ f ) ( x ) = f ( x + 1... | https://en.wikipedia.org/wiki/Mahler's_theorem |
In mathematics , the Mahler measure M ( p ) {\displaystyle M(p)} of a polynomial p ( z ) {\displaystyle p(z)} with complex coefficients is defined as
M ( p ) = | a | ∏ | α i | ≥ 1 | α i | = | a | ∏ i = 1 n max { 1 , | α i | } , {\displaystyle M(p)=|a|\prod _{|\alpha _{i}|\geq 1}|\alpha _{i}|=|a|\prod _{i=1}^{n}\max\{1... | https://en.wikipedia.org/wiki/Mahler_measure |
In mathematics, the Mahler polynomials g n ( x ) are polynomials introduced by Mahler [ 1 ] in his work on the zeros of the incomplete gamma function .
Mahler polynomials are given by the generating function
Which is close to the generating function of the Touchard polynomials .
The first few examples are (sequence ... | https://en.wikipedia.org/wiki/Mahler_polynomial |
Mahmoud Hashem Abdel-Kader is a physical chemist and Professor of Photochemistry at Cairo University /NILES Institute. [ 1 ] [ 2 ] He founded the European Universities in Egypt [ 3 ]
Mahmoud Abdel-Kader received his BSc in Chemistry from Alexandria University in 1969, and was then associated with the Faculty of Scienc... | https://en.wikipedia.org/wiki/Mahmoud_Hashem_Abdel-Kader |
The Shell in situ conversion process ( Shell ICP ) is an in situ shale oil extraction technology to convert kerogen in oil shale to shale oil . It is developed by the Shell Oil Company .
Shell's in situ conversion process has been under development since the early 1980s. [ 1 ] In 1997, the first small scale test was c... | https://en.wikipedia.org/wiki/Mahogany_Research_Project |
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