Definitions

1. A dipole is characterized by its "dipole moment", the product of the charge and the separation distance (coulomb times centimeter). (Web site)
2. A point (electric) dipole is the limit obtained by letting the separation tend to 0 while keeping the dipole moment fixed.
3. An electric dipole is a separation of positive and negative charge.
4. As every dipole is a vector, the dipole density P is also a vector or a directed quantity. (Web site)
5. Torque on a dipole is proportional to its cross-product into the field.

Dipole Approximation

1. The simplest is a dipole approximation when the electron-field interaction term j*A is replaced with r*E. These calculations are given in many textbooks. (Web site)

Geomagnetic Poles

1. The Geomagnetic poles are the places where the axis of this dipole intersects the Earth's surface.
2. Because the dipole approximation is far from a perfect fit to the Earth's magnetic field, the magnetic field is not quite vertical at the geomagnetic poles.

Dipole Component

1. The dipole component of Earth's field can diminish even while the total magnetic field remains the same or increases.

Point Magnetic Dipole

1. Notice that this is formally identical to the magnetic field of a point magnetic dipole; only a few names have changed.

Quantum Electric Dipole Field

1. They are in the quantum electric dipole field, represented by singularities, topological defects, local symmetries and localizations of the field. (Web site)

Ideal Magnetic Dipole

1. The magnetic field of an ideal magnetic dipole is depicted on the right. (Web site)

Permanent Dipole Moment

1. For example: (positive) H-Cl (negative) A molecule with a permanent dipole moment is called a polar molecule and is polarized. (Web site)

Magnetic Poles

1. Dipole: A compact source of magnetic force, with two magnetic poles. (Web site)

Electric Dipole Approximation

1. In this Electric Dipole approximation, we can make general progress on computation of the matrix element. (Web site)

Electric Dipole Moment

1. An electric dipole moment is usually created when positive and negative charges are spatially separated.

Dipoles

1. Induced dipoles These occur when one molecule with a permanent dipole repels another molecule's electrons, "inducing" a dipole moment in that molecule.
2. The dipoles of course interact with one another via their electric fields, so the DDA is also sometimes referred to as the coupled dipole approximation. (Web site)

Magnetic Dipole

1. In addition to dipoles in electrostatics, it is also common to consider an electric or magnetic dipole that is oscillating in time.
2. From classical electrodynamics, a rotating electrically charged body creates a magnetic dipole with magnetic poles of equal magnitude but opposite polarity.
3. A permanent electric dipole is called an electret.A magnetic dipole is a closed circulation of electric current.

Magnetic Dipole Moment

1. In atomic physics, the magnetic dipole moment of an electron is caused by its intrinsic property of spin within a magnetic field. (Web site)
2. The B field of a small[ nb 11] straight magnet is proportional to the magnet's strength (called its magnetic dipole moment m). (Web site)
3. A magnetic dipole moment will experience a force proportional to the field gradient since the two "poles" will be subject to different fields. (Web site)

Contrast

1. In contrast to Rayleigh scattering or Dipole scattering, the Mie theory embraces all possible ratios of diameter to wavelength.

Unit

1. In consequence, molecular dipole moments are measured in debyes, a unit named in his honor.
2. This is the basis on which the unit of magnetic dipole moment is defined. (Web site)

Origin

1. This equation indicates the origin of the name Electric Dipole: the matrix element is of the vector which is a dipole. (Web site)
2. In the theory of electromagnetism, the first derivative of the delta function represents a point magnetic dipole situated at the origin.

Model

1. Model the spacecraft as a magnetic dipole. (Web site)

Calculations

1. Therefore, in our calculations, the multipole of rank one, (the dipole as it is commonly known), is always going to be a null vector.
2. The calculations in this database include bond lengths, angles, atomic charges, the dipole moment, bond orders, and molecular orbital energies. (Web site)
3. As a summary of our calculations in the Electric Dipole approximation, lets write out the decay rate formula. (Web site)

Definition

1. Further, by the definition of broken symmetry, the proven asymmetry of the source dipole in the vacuum flux must extract and output observable energy. (Web site)

Consistent

1. The electric dipole moment is consistent with zero; the bound on it is that it is less than 0.54×10 -23 e-cm.

Strong

1. The oxygen has a slight negative charge while the hydrogens have a slight positive charge giving the article a strong effective dipole moment. (Web site)
2. A hydrogen bond is effectively a strong example of a permanent dipole.
3. The dipole forces within water are particularly strong for two additional reasons. (Web site)

Presence

1. There is an energy associated with a magnetic dipole moment in the presence of a magnetic field. (Web site)

Combined

1. The spin of an electron, combined with its orbital angular momentum, results in a magnetic dipole moment and creates a magnetic field. (Web site)

Instance

1. For instance an azomethine ylide is a dipole in the Prato reaction with fullerenes. (Web site)

Difference

1. There is an increase difference in polarity, and an increase in dipole.

Neutron

1. New theories going beyond the Standard Model generally lead to much larger predictions for the electric dipole moment of the neutron. (Web site)
2. Also included are the searches for a permanent electric dipole moment of the electron, muon, neutron and atomic nuclei.
3. The permanent dipole of an isolated neutron is negligible but it may be induced by the electrostatic induction of a nearby proton.

Proton

1. Combined with the proton, the neutron becomes the deuteron and the induced dipole the deuteron quadrupole.

Separation

1. The usual far field approximation cannot be used because the separation distance between the dipole charges is comparable to the nucleon size.

Earth

1. In the simplest terms, Earth can be thought of as a dipole (2-pole) magnet.
2. The dipole moment of Uranus is 50 times that of Earth. (Web site)
3. The cosmic-ray flux, and hence the production rate of C-14, is a function not only of the solar activity but also of the magnetic dipole moment of the Earth. (Web site)

Polar

1. This shape gives the molecule an overall dipole moment, and makes it polar so that ammonia readily dissolves in water.
2. If the geometry of the molecule is such that the vector sum of all of the dipole moments does not equal zero, then the molecule is polar. (Web site)

Product

1. Associated with both these types of current loops is a magnetic dipole moment, the value of which is iA, the product of the current and the area of the loop. (Web site)

Final Product

1. The bottom map is the final product with both dipole and galaxy effects removed - this is the one usually cited as the model for CMB distribution. (Web site)

Energy

1. This destroys the dipole and cuts off its free extraction of energy from the vacuum. (Web site)
2. Well, that throws away almost all of the energy flow extracted from the vacuum by a source dipole in an electrical circuit. (Web site)
3. The first term gives the energy of the nuclear dipole in the field due to the electronic orbital angular momentum. (Web site)

Subatomic Particles

1. The distortion of the subatomic particles is exceedingly small and so the dipole is exceedingly weak.

Carbonyl Group

1. In the carbonyl group, we know that the carbon is the more positive end of the C=O dipole, so let's try to make our new bond there. (Web site)

Positive

1. Carbon-halogen bonds are very substantially polar covalent, with carbon as the positive and halogen as the negative end of the dipole.
2. Such a covalent bond is polar, and will have a dipole (one end is positive and the other end negative). (Web site)
3. Many molecules have such dipole moments due to non-uniform distributions of positive and negative charges on the various atoms.

Central Sulcus

1. The dipole on SEPs is consistent with the previously accepted notion that the cortices along the central sulcus are activated.
2. Formation of a dipole of N20 peak with opposite polarities across the central sulcus was well delineated in animation movies.

Atom

1. A physical quantity associated with the magnetic field of a dundamental particle; as, An orbiting electron in an atom will have a magnetic dipole moment. (Web site)
2. There will be no accumulation of bonding electrons on any one atom and the bond dipole moment will be zero. (Web site)

Negative Charge

1. The negative charge of the dipole is attracted by the proton and the positive charge repelled.

Magnetic Field

1. William Gilbert proposes Earth has dipole magnetic field.
2. The reverse process is called the alpha-effect.[10] A dipole magnetic field is one seen around a bar magnet or around a particle with nonzero spin. (Web site)
3. They had expected the magnetic field to have the form of a dipole, similar to the Earth. (Web site)

Particle

1. The only difference is that two particle bound state is a dipole.
2. Historically, the magneton is a unit used to measure of the magnetic dipole moment of a particle.
3. This has an interesting consequence on the electric dipole moment (EDM) of any particle. (Web site)

Particles

1. Particles with spin have a magnetic dipole moment; in a magnetic field, each spin can exist in one of a number of distinct states having different energies. (Web site)
2. It occurs because the charged particles are accelerated (deflected) by the magnetic field from the dipole magnets to make the beam travel around the ring.

Electric Dipole

1. The induced electric dipole, combined with the proton electric charge, becomes the quadrupole of the deuteron Q = 0.288 fm2 = (0.54 fm)2.
2. DESCRIPTION: This animation shows the radiation pattern from an electric dipole whose dipole moment completely reverses over the course of the sequence. (Web site)
3. Derive an expression for the electric field due to an electric dipole at a point on (a) the axial line (b) the equatorial line.

Electric

1. Because of the angular momentum, the dynamics of a magnetic dipole in a magnetic field differs from that of an electric dipole in an electric field. (Web site)
2. In chemistry, polarity refers to a separation of electric charge leading to a molecule having an electric dipole.
3. The magnetic dipole originating in an atom, electron, or nucleus is not a true dipole, as is an electric dipole.

Dipole Moment

1. The origin of the separation is called a dipole moment and the molecule itself can be called a dipole. (Web site)
2. In particular, such a trap may use the dipole moment (electrical or magnetic) of the trapped particles.
3. Dipoles can be characterized by their dipole moment, a vector quantity. (Web site)

Bond

1. The unequal sharing of electrons within a bond leads to the formation of an electric dipole: a separation of positive and negative electric charge.
2. The P=O bond is very polar with a dipole moment of 4.51 D for triphenylphosphine.
3. The greater the difference in electronegativity between two atoms within a molecule, the larger is the dipole moment in that bond. (Web site)

Categories

1. Manufacturing > Measurement > Force > Magnetic Field
2. Polarity
3. Encyclopedia of Finance. > Technology > Engines > Torque
4. Countries > European Union > Poland > Poles
5. Ethers

Related Keywords

* Amides * Charge * Ethers * Field * Magnet * Magnetic * Polarity * Poles * Torque

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