This HTML5 document contains 49 embedded RDF statements represented using HTML+Microdata notation.

The embedded RDF content will be recognized by any processor of HTML5 Microdata.

PrefixNamespace IRI
dbpedia-dehttp://de.dbpedia.org/resource/
dctermshttp://purl.org/dc/terms/
n6http://fr.dbpedia.org/resource/Équation_d'
dbpedia-owlhttp://dbpedia.org/ontology/
foafhttp://xmlns.com/foaf/0.1/
n20http://fr.dbpedia.org/resource/Bêta_(physique_des_plasmas)
rdfshttp://www.w3.org/2000/01/rdf-schema#
n7http://fr.dbpedia.org/resource/Vitesse_d'
n26http://fr.dbpedia.org/resource/Force_(physique)
category-frhttp://fr.dbpedia.org/resource/Catégorie:
dbpedia-plhttp://pl.dbpedia.org/resource/
n9http://fr.dbpedia.org/resource/Modèle:
n24http://rdf.freebase.com/ns/m.
wiki-frhttp://fr.wikipedia.org/wiki/
n19http://fr.dbpedia.org/resource/Tesla_(unité)
rdfhttp://www.w3.org/1999/02/22-rdf-syntax-ns#
owlhttp://www.w3.org/2002/07/owl#
n23http://fr.dbpedia.org/resource/Pression_magn%C3%A9
dbpedia-frhttp://fr.dbpedia.org/resource/
n4http://www.w3.org/ns/prov#
prop-frhttp://fr.dbpedia.org/property/
n10http://fr.dbpedia.org/resource/Cluster_(satellite)
n17http://fr.dbpedia.org/resource/Onde_d'
xsdhhttp://www.w3.org/2001/XMLSchema#
n25http://fr.dbpedia.org/resource/Densité_d'
n5http://fr.wikipedia.org/wiki/Pression_magnétique?oldid=
dbpediahttp://dbpedia.org/resource/
Subject Item
dbpedia-fr:Pression_magnétique
owl:sameAs
dbpedia-pl:Ciśnienie_magnetyczne dbpedia-de:Magnetischer_Druck dbpedia:Magnetic_pressure n23:tique n24:0bn5_m
dcterms:subject
category-fr:Électromagnétisme
prop-fr:wikiPageUsesTemplate
n9:Sub n9:Portail_physique
rdfs:label
Ciśnienie magnetyczne Pression magnétique Magnetic pressure Magnetischer Druck
rdfs:comment
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. En électromagnétisme, la pression magnétique désigne une quantité associée au champ magnétique, s'apparentant dans certaines situations à une force de pression, d'où son nom.
dbpedia-owl:wikiPageRevisionID
90408921
dbpedia-owl:abstract
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 isWhere 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. En électromagnétisme, la pression magnétique désigne une quantité associée au champ magnétique, s'apparentant dans certaines situations à une force de pression, d'où son nom.
n4:wasDerivedFrom
n5:90408921
dbpedia-owl:wikiPageOutDegree
26
dbpedia-owl:wikiPageID
2907738
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Courant_électrique dbpedia-fr:Tension_magnétique dbpedia-fr:Électromagnétisme n6:Euler dbpedia-fr:Gravitation dbpedia-fr:Champ_magnétique dbpedia-fr:Magnétohydrodynamique dbpedia-fr:Relativité_générale dbpedia-fr:Ion category-fr:Électromagnétisme dbpedia-fr:Équations_de_Maxwell dbpedia-fr:Pression n17:Alfvén n19: dbpedia-fr:Perméabilité_du_vide dbpedia-fr:Onde n7:Alfvén n25:énergie dbpedia-fr:Force_de_Lorentz n26: dbpedia-fr:Principe_fondamental_de_la_dynamique
dbpedia-owl:wikiPageLength
2327
foaf:isPrimaryTopicOf
wiki-fr:Pression_magnétique
Subject Item
n7:Alfvén
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Pression_magnétique
Subject Item
dbpedia-fr:Champ_magnétique
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Pression_magnétique
Subject Item
n20:
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Pression_magnétique
Subject Item
dbpedia-fr:Champ_magnétique_interplanétaire
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Pression_magnétique
Subject Item
n10:
dbpedia-owl:wikiPageWikiLink
dbpedia-fr:Pression_magnétique
Subject Item
wiki-fr:Pression_magnétique
foaf:primaryTopic
dbpedia-fr:Pression_magnétique