Heat and momentum transfer for magnetoconvection in
... solar chromosphere [13] or the x-ray flaring activity of some young neutron stars, which are termed magnetars [14]. Less spectacular, but not less important, are numerous industrial applications ranging from materials processing, such as crystal growth by the Czochralski method [15] or dendritic sol ...
... solar chromosphere [13] or the x-ray flaring activity of some young neutron stars, which are termed magnetars [14]. Less spectacular, but not less important, are numerous industrial applications ranging from materials processing, such as crystal growth by the Czochralski method [15] or dendritic sol ...
Chapter 7. Electrodynamics 7.1. Electromotive Force
... fraction of space, and therefore definitely will not intercept all field lines outside the square loop. Therefore, there will be more field lines pointing into the page then there are field lines pointing out of the page. Consequently, the net magnetic flux will be pointing into the page. When the c ...
... fraction of space, and therefore definitely will not intercept all field lines outside the square loop. Therefore, there will be more field lines pointing into the page then there are field lines pointing out of the page. Consequently, the net magnetic flux will be pointing into the page. When the c ...
360 Degree Angle Sensor Using Spin Valve
... easier to energize the two half-bridges by using a single supply of either constant current or voltage, as shown in Figure 3 (b). However, the two outputs are taken out separately, rather than as a differential of the two nodes usually used for a full bridge. The final angle sensor is packaged into ...
... easier to energize the two half-bridges by using a single supply of either constant current or voltage, as shown in Figure 3 (b). However, the two outputs are taken out separately, rather than as a differential of the two nodes usually used for a full bridge. The final angle sensor is packaged into ...
An introduction to the physics of magnetic resonance imaging.
... flux density (Figure 2). Magnetic lines of force are pictured as vectors emerging from the north pole of a magnet and entering the south pole of the same magnet. The strength of the magnet is described by the number of lines of force crossing a measuring area between the poles. In the SI system of m ...
... flux density (Figure 2). Magnetic lines of force are pictured as vectors emerging from the north pole of a magnet and entering the south pole of the same magnet. The strength of the magnet is described by the number of lines of force crossing a measuring area between the poles. In the SI system of m ...
Physics, Chapter 30: Magnetic Fields of Currents
... Our original definition of current was based on the flow of charges through a surface in a given time interval; it remains to be shown that a set of moving charges will produce the same magnetic effect as a current in a wire. This was first shown experimentally by H. A. Rowland in 1876. He used an e ...
... Our original definition of current was based on the flow of charges through a surface in a given time interval; it remains to be shown that a set of moving charges will produce the same magnetic effect as a current in a wire. This was first shown experimentally by H. A. Rowland in 1876. He used an e ...
9.3.2 the relative motion between a conductor
... According to Lenz’s law a current is induced in the coil which induces a magnetic field that interacts with the B-field of the magnet to oppose the motion towards it. What happens if Lenz’s law was not true? The induced current would create a magnetic field to attract the magnet attractive force b ...
... According to Lenz’s law a current is induced in the coil which induces a magnetic field that interacts with the B-field of the magnet to oppose the motion towards it. What happens if Lenz’s law was not true? The induced current would create a magnetic field to attract the magnet attractive force b ...
PHYS4210 Electromagnetic Theory Quiz #1 31 Jan 2011
... This is a closed book quiz! You have thirty minutes to complete it. This question has multiple parts, not necessarily equally weighted. If you are stuck on (a), indicate how you would use (a) to move on to (b) and (c) for partial credit. (a) Find the electrostatic potential Φ(x) for all points insid ...
... This is a closed book quiz! You have thirty minutes to complete it. This question has multiple parts, not necessarily equally weighted. If you are stuck on (a), indicate how you would use (a) to move on to (b) and (c) for partial credit. (a) Find the electrostatic potential Φ(x) for all points insid ...
NMR SPECTROCOPY
... THE EXTERNAL MAGNETIC FIELD In the macroscopic world, two magnets can be aligned in an infinite number of orientations . At the atomic level, these alignments are quantized. There are only a finite number of alignments a nucleus can take against an external magnetic field. This number depends on th ...
... THE EXTERNAL MAGNETIC FIELD In the macroscopic world, two magnets can be aligned in an infinite number of orientations . At the atomic level, these alignments are quantized. There are only a finite number of alignments a nucleus can take against an external magnetic field. This number depends on th ...
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.