Using the “Clicker”
... Case 3: Three objects, one +, one -, and one neutral, have an initial velocity perpendicular to the field. The field is directed out of the screen. Magnetic fields exert no force on neutral particles. The force exerted on a + charge is opposite to that exerted on a – charge. The force on a charged p ...
... Case 3: Three objects, one +, one -, and one neutral, have an initial velocity perpendicular to the field. The field is directed out of the screen. Magnetic fields exert no force on neutral particles. The force exerted on a + charge is opposite to that exerted on a – charge. The force on a charged p ...
Spin-transfer Torque and Topological Changes of Magnetic Textures
... metal compounds [Muhlbauer et al. (2009)] were experimentally observed. These configurations are interesting because a change between states having different topologies (switching of the vortex core, motions and annihilation of skyrmions), can be used as basic states in nonvolatile memories and spin ...
... metal compounds [Muhlbauer et al. (2009)] were experimentally observed. These configurations are interesting because a change between states having different topologies (switching of the vortex core, motions and annihilation of skyrmions), can be used as basic states in nonvolatile memories and spin ...
Onset of Particle Rotation in a Ferrofluid Shear Flow V 82, N 19
... flow field into the magnetic field or vice versa. In the former case the particle rotation is slowed down and an extra ac magnetization component transverse to the applied field can be detected (magnetovortical resonance) [4,5]. In the opposite case v . V the ac field speeds up the particle’s rotati ...
... flow field into the magnetic field or vice versa. In the former case the particle rotation is slowed down and an extra ac magnetization component transverse to the applied field can be detected (magnetovortical resonance) [4,5]. In the opposite case v . V the ac field speeds up the particle’s rotati ...
Induction
... ! We can visualize the change in magnetic field as a change in the number of magnetic field lines passing through the loop ! Faraday’s Law of Induction states that: • An emf is induced in a loop when the number of magnetic field lines passing through the loop changes with time ...
... ! We can visualize the change in magnetic field as a change in the number of magnetic field lines passing through the loop ! Faraday’s Law of Induction states that: • An emf is induced in a loop when the number of magnetic field lines passing through the loop changes with time ...
Giant Electric Field Tuning of Magnetism in Novel (PZN-PT) Heterostructures
... FMR linewidth as well as the asymmetric line shape. Such a double resonance feature can also be clearly observed in Figure 4, particularly at a high applied electric field. The appearance of the first-order standing spin wave testifies to the fact that there is a free boundary condition on one of th ...
... FMR linewidth as well as the asymmetric line shape. Such a double resonance feature can also be clearly observed in Figure 4, particularly at a high applied electric field. The appearance of the first-order standing spin wave testifies to the fact that there is a free boundary condition on one of th ...
Magnet Background Knowledge
... Magnets are made of metal and can be many shapes, sizes and strengths. Magnets are the strongest at their poles and are classified as objects that have a magnetic field around them which attracts or repels certain materials. Magnets have two poles, a north pole and a south pole. Magnets attract to e ...
... Magnets are made of metal and can be many shapes, sizes and strengths. Magnets are the strongest at their poles and are classified as objects that have a magnetic field around them which attracts or repels certain materials. Magnets have two poles, a north pole and a south pole. Magnets attract to e ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.