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8.02x - Module 10.01 - Pressure Due to a Magnetic Field in a Solenoid.
8.02x - Module 10.01 - Pressure Due to a Magnetic Field in a Solenoid.
Published: 2015/02/16
Channel: Lectures by Walter Lewin. They will make you ♥ Physics.
Liquid metal pool deformation by means of magnetic pressure
Liquid metal pool deformation by means of magnetic pressure
Published: 2016/08/12
Channel: mohamad taha Mirhoseini
Vortex induced negative magnetic pressure
Vortex induced negative magnetic pressure
Published: 2016/07/21
Channel: Vinny Real
Prof Lewin: Levitation of a woman, Superconductivity, plasma, magnetic pressure
Prof Lewin: Levitation of a woman, Superconductivity, plasma, magnetic pressure
Published: 2017/12/03
Channel: stivep1
Lecture 15 - Magnetohydrodynamics, beta, magnetic pressure, sausage instabilities, kink instability
Lecture 15 - Magnetohydrodynamics, beta, magnetic pressure, sausage instabilities, kink instability
Published: 2017/05/30
Channel: USYD - Senior Plasma Physics Lectures
Magnetic Push to Release Double Cabinet Door Catch   LocksOnline Product Reviews
Magnetic Push to Release Double Cabinet Door Catch LocksOnline Product Reviews
Published: 2015/02/05
Channel: LocksOnline
电和磁 49 Pressure Due to a Magnetic Field in
电和磁 49 Pressure Due to a Magnetic Field in
Published: 2012/06/30
Channel: borawang008
Hand massage Manipure by Magnetic
Hand massage Manipure by Magnetic
Published: 2012/02/09
Channel: MagneticNailDesign
WSO - Skies are JUST NOT RIGHT - Plus, Magnetic Pressure from Dark Side Continues
WSO - Skies are JUST NOT RIGHT - Plus, Magnetic Pressure from Dark Side Continues
Published: 2017/07/05
Channel: WSO
Ratio of gas to magnetic pressure in a star partially disrupted by a supermassive black hole
Ratio of gas to magnetic pressure in a star partially disrupted by a supermassive black hole
Published: 2016/09/27
Channel: James Guillochon
WSO - Does Magnetic Pressure Indicate 2nd Star in our Solar System?
WSO - Does Magnetic Pressure Indicate 2nd Star in our Solar System?
Published: 2017/07/02
Channel: WSO
The Beauty of "Spin" - Vortexing Magnetic Fields & New Energy Tech.
The Beauty of "Spin" - Vortexing Magnetic Fields & New Energy Tech.
Published: 2013/04/11
Channel: Joshua Thomas
Magnetic Downstacker for ends with Pressure Reduce Unit
Magnetic Downstacker for ends with Pressure Reduce Unit
Published: 2013/01/09
Channel: Canline NL
Jeans Instability under external pressure and magnetic field
Jeans Instability under external pressure and magnetic field
Published: 2017/12/25
Channel: Daxal Mehta
Magnetosphere 2011 05 28 - High pressure, temporary loss of magnetic Southpole
Magnetosphere 2011 05 28 - High pressure, temporary loss of magnetic Southpole
Published: 2011/05/29
Channel: TunnelVision
Magnetic Fields Interaction With Aluminum
Magnetic Fields Interaction With Aluminum
Published: 2015/12/02
Channel: MrfixitRick
Monster magnet meets blood...
Monster magnet meets blood...
Published: 2017/10/27
Channel: Brainiac75
ot magnetic pressure
ot magnetic pressure
Published: 2016/01/28
Channel: Gareth Murphy
Does Magnetic Pressure Indicate 2nd Star in our Solar System
Does Magnetic Pressure Indicate 2nd Star in our Solar System
Published: 2017/11/06
Channel: TRi Dan
Sun simulator hides solar eclipse with pl@netaty magnetic pressure creates cloud punch 12/13/2016
Sun simulator hides solar eclipse with pl@netaty magnetic pressure creates cloud punch 12/13/2016
Published: 2017/01/24
Channel: Jeff P
flying magnet - magnetic levitation (floating magnet) experiment - how to levitate a magnet - HD
flying magnet - magnetic levitation (floating magnet) experiment - how to levitate a magnet - HD
Published: 2017/05/27
Channel: MS Insider
Space Weather: Magnetic Field Pressure
Space Weather: Magnetic Field Pressure
Published: 2016/12/23
Channel: SolarAlchemy
magnetic pressure
magnetic pressure
Published: 2011/01/08
Channel: TheCapricornBros
RicHard-Tek - Magnetic Pressure [Hardtek NL]
RicHard-Tek - Magnetic Pressure [Hardtek NL]
Published: 2013/05/03
Channel: RicHard Tek
Class 8 Physics : Force and Pressure | Magnetic Force (CBSE/NCERT)
Class 8 Physics : Force and Pressure | Magnetic Force (CBSE/NCERT)
Published: 2017/09/21
Channel: Toppr
Magnetic Tesla Turbine Generator
Magnetic Tesla Turbine Generator
Published: 2012/10/26
Channel: MrfixitRick
Air, electrical & magnetic pressure sound waves
Air, electrical & magnetic pressure sound waves
Published: 2014/08/20
Channel: Project studio handbook
WSO - Skies are JUST NOT RIGHT - Plus, Magnetic Pressure from Dark Side Continues
WSO - Skies are JUST NOT RIGHT - Plus, Magnetic Pressure from Dark Side Continues
Published: 2017/11/03
Channel: Thurta Succe
Magnetic pressure
Magnetic pressure
Published: 2016/09/25
Channel: SchoolBoy Stuu
【Nuevo Anunci】ZOYO Magnetic Clay Plasticine Toy Pressure Reduction Toy de Tmart.es
【Nuevo Anunci】ZOYO Magnetic Clay Plasticine Toy Pressure Reduction Toy de Tmart.es
Published: 2014/12/22
Channel: Tmart España
Magnetic Stirring with Titanium High Pressure Hydrothermal Reactor
Magnetic Stirring with Titanium High Pressure Hydrothermal Reactor
Published: 2015/09/11
Channel: MTI Corp
Orszag Tang Vortex - magnetic pressure - atlas AMR code
Orszag Tang Vortex - magnetic pressure - atlas AMR code
Published: 2016/01/28
Channel: Gareth Murphy
The Real fact ,why BERMUDA TRIANGLE has great magnetic pressure🌎🌏
The Real fact ,why BERMUDA TRIANGLE has great magnetic pressure🌎🌏
Published: 2017/08/03
Channel: Kangana
Magnetic Pressure 23-01-2012 12:10 / 24-01-2012 10:10
Magnetic Pressure 23-01-2012 12:10 / 24-01-2012 10:10
Published: 2012/01/24
Channel: Chris van de Wouw
( Singolo House 2009 ) DeeJosh - Magnetic Pressure
( Singolo House 2009 ) DeeJosh - Magnetic Pressure
Published: 2009/01/18
Channel: Josh Sabusco
SMS collapse into SMBH magnetic pressure contour+velocity fields (MHD)
SMS collapse into SMBH magnetic pressure contour+velocity fields (MHD)
Published: 2016/08/26
Channel: Lunan Sun
SMS collapse into SMBH magnetic pressure contour+velocity fields (MHD, zoomed in)
SMS collapse into SMBH magnetic pressure contour+velocity fields (MHD, zoomed in)
Published: 2016/08/26
Channel: Lunan Sun
Magnetic Flow Switch Explained
Magnetic Flow Switch Explained
Published: 2014/04/16
Channel: AccelTruckMounts
Magnetic roller "Zero Pressure" accumulation
Magnetic roller "Zero Pressure" accumulation
Published: 2013/08/20
Channel: Adept Conveyor
18watt Low Pressure Sodium Electronic vs Magnetic Ballasts
18watt Low Pressure Sodium Electronic vs Magnetic Ballasts
Published: 2016/08/09
Channel: Parrot175
Kool Keith - Feature Magnetic - [Full Album]
Kool Keith - Feature Magnetic - [Full Album]
Published: 2016/09/16
Channel: Cotardz TV
ISO 136651997, Seamless and welded steel tubes for pressure purposes   Magnetic particle inspection
ISO 136651997, Seamless and welded steel tubes for pressure purposes Magnetic particle inspection
Published: 2017/05/14
Channel: Conner
Get Started in Sensing! Learn How to Measure Pressure, Altitude, Temperature, Magnetic Fields, Locat
Get Started in Sensing! Learn How to Measure Pressure, Altitude, Temperature, Magnetic Fields, Locat
Published: 2014/06/27
Channel: element14 extras
Magnetic high Pressure Heatpress.mpg
Magnetic high Pressure Heatpress.mpg
Published: 2010/09/25
Channel: dhads23
Vortex shedding from a magnetic drive read-and-write head - pressure
Vortex shedding from a magnetic drive read-and-write head - pressure
Published: 2015/03/03
Channel: Andrei Horvat
ISO 136651997, Seamless and welded steel tubes for pressure purposes   Magnetic particle inspection
ISO 136651997, Seamless and welded steel tubes for pressure purposes Magnetic particle inspection
Published: 2017/07/24
Channel: Wayne Ryan
How To Install A Magnetic Starter - Air Compressors - Compressor-Source.com
How To Install A Magnetic Starter - Air Compressors - Compressor-Source.com
Published: 2015/06/29
Channel: Compressor-Source TV
Magnetic Starter Explained
Magnetic Starter Explained
Published: 2013/11/18
Channel: The Wood Craftsman
200% Pressure Magnetic Massage Filtration Shower Head, Great replacement for an existing shower head
200% Pressure Magnetic Massage Filtration Shower Head, Great replacement for an existing shower head
Published: 2015/10/12
Channel: Titaxutap
ISO 136641997, Seamless and welded steel tubes for pressure purposes   Magnetic particle inspection
ISO 136641997, Seamless and welded steel tubes for pressure purposes Magnetic particle inspection
Published: 2017/07/24
Channel: Wayne Ryan
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Magnetic pressure is an energy density associated with a magnetic field. Any magnetic field has an associated magnetic pressure contained by the boundary conditions on the field. It is identical to any other physical pressure except that it is carried by the magnetic field rather than (in the case of a gas) by the kinetic energy of gas molecules. A gradient in field strength causes a force due to the magnetic pressure gradient called the magnetic pressure force.

The magnetic pressure force is readily observed in an unsupported loop of wire. If an electric current passes through the loop, the wire serves as an electromagnet, such that the magnetic field strength inside the loop is much greater than the field strength just outside the loop. This gradient in field strength gives rise to a magnetic pressure force that tends to stretch the wire uniformly outward. If enough current travels through the wire, the loop of wire will form a circle. At even higher currents, the magnetic pressure can create tensile stress that exceeds the tensile strength of the wire, causing it to fracture, or even explosively fragment. Thus, management of magnetic pressure is a significant challenge in the design of ultrastrong electromagnets.

The force (in cgs) F exerted on a coil by its own current is[1]

Where Y is the internal inductance of the coil, defined by the distribution of current. Y is 0 for high frequency currents carried mostly by the outer surface of the conductor, and 0.25 for DC currents distributed evenly throughout the conductor. See inductance for more information.

Interplay between magnetic pressure and ordinary gas pressure is important to magnetohydrodynamics and plasma physics. Magnetic pressure can also be used to propel projectiles; this is the operating principle of a railgun.

If any currents present are parallel to a magnetic field, the field lines follow shapes in which the magnetic pressure gradient is balanced by the magnetic tension force. Such a field configuration is called force-free because there is no Lorentz force (). The familiar potential magnetic field is a special case of a force-free field: potential field configurations occupy space that contains no electric current at all.

The magnetic pressure is given in SI units (P in Pa, B in T, μ0 in H/m) by

and in cgs units (P in dyn/cm², B in G) by

.

In practical units,

See also[edit]

Notes[edit]

  1. ^ Garren 1994, p. 3425

References[edit]


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