# Questions tagged [dipole-moment]

Dipole moment is the electrostatic moment generated by two opposite charges taken together, far away from the charge's locations

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### Transition dipole moment of electronic states in $H_{3}$ molecule

I have some questions regarding statements about transition moments of $H_{3}$ molecule in the article ...
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### Confusion over Gauss' law for an ideal electric dipole

To find the charge density of an ideal electric dipole centred at the origin, I can evaluate the divergence of $\vec{E}(\vec{x})$ which equates to evaluating the laplacian of the potential. Working ...
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### Electric field due to group of dipoles

We know that an electric dipole (having no net charge) produces electric field around it, which means net charge is not a compulsory condition to make electric field. Now if in a region a group of ...
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### How is the magnetic dipole moment operator defined?

In quantum mechanics, the electric dipole moment operator is defined as $$\hat{\vec D}=q\hat{\vec r}$$ where $q$ is the electric charge of the distribution. This is directly obtained by promoting ...
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### How to search for an atom electric dipole moment

I read some papers about searching for induced atomic EDM. Finding such an EDM would imply a violation of the P and T-invariance (and hence CP). The way the derivation works (very roughly) is by ...
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### Force on a Magnetic Dipole due to Another Dipole

I'm trying to find the force on a magnetic dipole $m_2(r,0,0)$ on the x-axis due to the magnetic field $\vec B_1$ produced by a another dipole $m_1(0,0,0)$ which is at the origin. Both magnetic points ...
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### Electric Field and Dipole Moment Synthetization (Attempt)

Based on the setup of the electric field between two equal charges, you end up getting the equation labeled 5.5. I am wondering if the term $qz$ from equation 5.5 can be stated $\vec p = qz\hat k$ ...
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### Dipole moment in primary polarization mechanism in a dielectric

The question I have is regarding material from an old University book I am currently reading, Chapter 13, "The Solid State", Third Edition, H.M Rosenburg. And it states that the first ...
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### Orientation of an electric dipole in an external magnetic field

I am wondering the following situation: Assume you have an atom in an external magnetic field. You can choose the direction of the external magnetic field as the quantization axis. Now, the external ...
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### Mechanical properties of electric point dipoles

Point electric dipoles are usually introduced as two charges $\pm q$ at a distance $d$, then taking the simultaneous limit $d \to 0$ and $q \to \infty$ keeping the product $qd = p$ constant. In this ...
1answer
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### Torque on an arbitrary shaped object having some dipole moment in a uniform electric field

Can anyone show me a proof that the torque on an arbitrary shaped object having a dipole moment $\vec{P}$ in a uniform electric field $\vec{E}$ is given by $\mathbf{N}=\mathbf{p} \times \mathbf{E}$. I ...
2answers
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### Proof of the formula for the atomic polarizability of a simple linear molecule

For an atom Griffiths says $$\mathbf{p}=\alpha \mathbf{E}$$ The constant of proportionality $\alpha$ is called atomic polarizability. And $\mathbf{E}$ is the external applied field Then he goes on ...
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### A Classical model for diamagnetism

I'm trying to derive a classical model to describe diamagnetism, and I'd like to understand if it is possible to understand the basic properties of diamagnetic materials with it i.e.: ''A diamagnetic ...
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### Does a rotating magnetic monopole have an electric dipole?

Does a rotating magnetic monopole have an electric dipole? It is known that a rotating electrically charged sphere possesses a magnetic dipole, so for symmetry I guess that also a magnetic monopole ...
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### Problem from dipole moment which involves perimeter of elipse

An ellipse has a uniform linear positive charge density in upper half (total upper half part charge $+Q$ ) and a uniform linear negative charge density in lower half (total lower half part charge $-Q$ ...
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### Forcing freezed water to become a ferroelectric?

I got answers a long time ago about the possibility to make of iced water a permanent ferroelectric.This means put the water in a box and apply a strong electric field and in that condition let the ...
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