Steady electric currents. Magnetism. Generation of heat. Biot
... We have found a certain analogy between the magnetic dipole moment m that determines the leading large r behaviour of the vector potential A(r) of a current distribution localised near the origin of space, and the electric dipole. Since the ‘dipole term’ gives the leading contribution to A(r), this ...
... We have found a certain analogy between the magnetic dipole moment m that determines the leading large r behaviour of the vector potential A(r) of a current distribution localised near the origin of space, and the electric dipole. Since the ‘dipole term’ gives the leading contribution to A(r), this ...
Spintronics - Physics | Oregon State University
... pointing left can represent a "0", while a magnetic moment pointing right can represent a "1". (b) Data can be written to the material by sending an electric current down conductors that pass nearby. In this case, the magnetic field produced by current x puts the magnetization into an intermediate s ...
... pointing left can represent a "0", while a magnetic moment pointing right can represent a "1". (b) Data can be written to the material by sending an electric current down conductors that pass nearby. In this case, the magnetic field produced by current x puts the magnetization into an intermediate s ...
Magnetic Properties - Help, Science!
... The earth is like a giant magnet! The nickel iron core of the earth gives the earth a magnetic field much like a bar magnet. ...
... The earth is like a giant magnet! The nickel iron core of the earth gives the earth a magnetic field much like a bar magnet. ...
induced magnetic field
... a loop of area A if the loop is tilted at an angle θ from the field. We represent magnetic flux with a dot product, just like with electric flux. The unit for magnetic flux is a Webber. ...
... a loop of area A if the loop is tilted at an angle θ from the field. We represent magnetic flux with a dot product, just like with electric flux. The unit for magnetic flux is a Webber. ...
PHY 212 LAB – Magnetic Field As a Function of Current
... Observation: A compass needle points in the direction of the net magnetic field (due to other sources) at the location of the compass needle. Explanation: If the compass needle points in a different direction than the magnetic field at its location, then there is a torque on the compass needle that ...
... Observation: A compass needle points in the direction of the net magnetic field (due to other sources) at the location of the compass needle. Explanation: If the compass needle points in a different direction than the magnetic field at its location, then there is a torque on the compass needle that ...
Magnetism - WordPress.com
... Ferromagnetic materials can be made into permanent or temporary magnets. If, as liquid iron or nickel is cooled, a magnetic field lines up the domains while the metal solidifies, the domains may remain more or less lined up throughout the substance, forming a permanent magnet. If the domains are not ...
... Ferromagnetic materials can be made into permanent or temporary magnets. If, as liquid iron or nickel is cooled, a magnetic field lines up the domains while the metal solidifies, the domains may remain more or less lined up throughout the substance, forming a permanent magnet. If the domains are not ...
Force between magnets
Magnets exert forces and torques on each other due to the complex rules of electromagnetism. The forces of attraction field of magnets are due to microscopic currents of electrically charged electrons orbiting nuclei and the intrinsic magnetism of fundamental particles (such as electrons) that make up the material. Both of these are modeled quite well as tiny loops of current called magnetic dipoles that produce their own magnetic field and are affected by external magnetic fields. The most elementary force between magnets, therefore, is the magnetic dipole–dipole interaction. If all of the magnetic dipoles that make up two magnets are known then the net force on both magnets can be determined by summing up all these interactions between the dipoles of the first magnet and that of the second.It is always more convenient to model the force between two magnets as being due to forces between magnetic poles having magnetic charges 'smeared' over them. Such a model fails to account for many important properties of magnetism such as the relationship between angular momentum and magnetic dipoles. Further, magnetic charge does not exist. This model works quite well, though, in predicting the forces between simple magnets where good models of how the 'magnetic charge' is distributed is available.