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Field-Induced Gap in a Quantum Spin
Field-Induced Gap in a Quantum Spin

Mass of the Electron Motivation for the Experiment
Mass of the Electron Motivation for the Experiment

... 2) In the upper part of the diagram, lines entering a black circle represent wires connected at that point, but lines that cross each other at 90 degrees represent non-intersecting wires. ...
No Slide Title
No Slide Title

Example The Electorostatic Fields of a Coaxial Line
Example The Electorostatic Fields of a Coaxial Line

... The coax has an outer diameter b, and an inner diameter a. The space between the conductors is filled with dielectric material of permittivity ε . Say a voltage V0 is placed across the conductors, such that the electric potential of the outer conductor is zero, and the electric potential of the inne ...
Effect of a magnetic field on the magnetostructural phase transition
Effect of a magnetic field on the magnetostructural phase transition

Equipotentials and Lines of Force
Equipotentials and Lines of Force

... The limit is taken to indicate that the test charge must be small enough so that it does not affect the original charge distribution that set up the field. Notice that the direction of the field is the same as the direction of the force on the positive test charge. The electric field lines of force ...
The Electric Circuit.
The Electric Circuit.

James Clerk Maxwell (1831 - 1879)
James Clerk Maxwell (1831 - 1879)

KHS Trial 2009 Solutions - Kotara High School
KHS Trial 2009 Solutions - Kotara High School

Magnetic Field due to Electric Current
Magnetic Field due to Electric Current

Lecture 15 (Slides) September 28
Lecture 15 (Slides) September 28

... functions, determined again by solving the Schrodinger equation, can be factored into an angular and a radial part if we employ spherical polar coordinates. The use of these coordinates makes it especially easy to locate nodes (regions of zero “electron density”) and to represent 3 dimensional proba ...
13 Magnetic Materials and Devices
13 Magnetic Materials and Devices

Generator ac - schoolphysics
Generator ac - schoolphysics

Problem Set 2
Problem Set 2

... At what distance along the central perpendicular axis of a uniformly charged plastic disk of radius 0.600 m is the magnitude of the electric field equal to onehalf the magnitude of the field at the center of the surface of the disk? SSM Problem 22.37 Suppose you design an apparatus in which a unifor ...
Problem Set 2
Problem Set 2

PHYS 110A - HW #8
PHYS 110A - HW #8

... ~ the actual field is in opposite directions above and below This is the magnitude of B, the plate. Since we are assuming the plates are large the magnetic field does not depend on the distance from them. The bottom plate is moving in the same direction but has an opposite charge. An opposite charg ...
Are we there yet? A Journey to Understand and Predict Solar
Are we there yet? A Journey to Understand and Predict Solar

... Preliminary: Free energy associated with flare productivity (maybe?): Magnetic free energy determined for 5 active regions as a function of flare productivity. Error bars reflect both uncertainties in the data and possible invalid assumptions used with the magnetic virial theorem. ...
Name
Name

... Lenz’s Law states that the induced EMF opposes the change in the magnetic field. Imagine you were actually turning the water wheel by hand to generate current. Would the wheel resist motion? _____Yes__________ As you worked harder at moving the wheel, you would expect the light to shine ____brighter ...
Chapter 1
Chapter 1

magnetic field - University of Utah Physics
magnetic field - University of Utah Physics

Radiating systems in free space
Radiating systems in free space

... nearly constant. If we are far away so that n and R do not practically change during the acceleration interval then this formula gives the angular distribution of the radiated power. If β → 1 the effect of the denominator of dP/dΩ increases and the radiated energy flux concentrates more parallel to ...
PowerPoint 演示文稿
PowerPoint 演示文稿

... of those escaping atoms then pass through a second narrow slit,to form a narrow beam of atoms. The beam passes between the poles of an electromagnet and then lands on a glass detector plate where it forms a silver deposit. ...
Quantum mechanics of electrons in strong magnetic field
Quantum mechanics of electrons in strong magnetic field

Electric Flux Density
Electric Flux Density

... material parameter. Also like conductivity, it relates the electric field to another vector field. Thus, we have an alternative way to view electrostatics: 1. Free charge ρv ( r ) creates electric flux density D ( r ) . 2. The electric field can be then determined by simply dividing D ( r ) by the m ...
Magenetic material and circuits
Magenetic material and circuits

< 1 ... 395 396 397 398 399 400 401 402 403 ... 661 >

Aharonov–Bohm effect

The Aharonov–Bohm effect, sometimes called the Ehrenberg–Siday–Aharonov–Bohm effect, is a quantum mechanical phenomenon in which an electrically charged particle is affected by an electromagnetic field (E, B), despite being confined to a region in which both the magnetic field B and electric field E are zero. The underlying mechanism is the coupling of the electromagnetic potential with the complex phase of a charged particle's wavefunction, and the Aharonov–Bohm effect is accordingly illustrated by interference experiments.The most commonly described case, sometimes called the Aharonov–Bohm solenoid effect, takes place when the wave function of a charged particle passing around a long solenoid experiences a phase shift as a result of the enclosed magnetic field, despite the magnetic field being negligible in the region through which the particle passes and the particle's wavefunction being negligible inside the solenoid. This phase shift has been observed experimentally. There are also magnetic Aharonov–Bohm effects on bound energies and scattering cross sections, but these cases have not been experimentally tested. An electric Aharonov–Bohm phenomenon was also predicted, in which a charged particle is affected by regions with different electrical potentials but zero electric field, but this has no experimental confirmation yet. A separate ""molecular"" Aharonov–Bohm effect was proposed for nuclear motion in multiply connected regions, but this has been argued to be a different kind of geometric phase as it is ""neither nonlocal nor topological"", depending only on local quantities along the nuclear path.Werner Ehrenberg and Raymond E. Siday first predicted the effect in 1949, and similar effects were later published by Yakir Aharonov and David Bohm in 1959. After publication of the 1959 paper, Bohm was informed of Ehrenberg and Siday's work, which was acknowledged and credited in Bohm and Aharonov's subsequent 1961 paper.Subsequently, the effect was confirmed experimentally by several authors; a general review can be found in Peshkin and Tonomura (1989).
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