Why does not dipole moment depend on coordinates system?

BREAD
Messages
50
Reaction score
0

Homework Statement


123123.PNG


This is problem 6.5 in Griffiths EM.
I can't understand why dipole moment does not depend on coordinate systems.

Homework Equations

The Attempt at a Solution

 
Physics news on Phys.org
He's saying that \mathbf{p} is constant in space, so its spatial derivatives vanish. Presumably this was stated in the problem statement.
 
pasmith said:
He's saying that \mathbf{p} is constant in space, so its spatial derivatives vanish. Presumably this was stated in the problem statement.


There is not such presumption stated in problem .
The solution is saying that " Dipole moment P doesn't depend on coordinates system" is a generalized and obvious idea
 
Thread 'Need help understanding this figure on energy levels'

Thread 'Need help understanding this figure on energy levels'

This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
View full post »
Thread 'Understanding how to "tack on" the time wiggle factor'

Thread 'Understanding how to "tack on" the time wiggle factor'

The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
View full post »

Similar threads

Classical magnetic dipole-dipole interaction in iron
Replies
7
Views
2K
Why a particle with spin=0 can't posses a magnetic dipole moment?
Replies
17
Views
3K
How Does Equation 4.39 Apply to Dipole Moments in Griffith's Problem 4.37?
Replies
4
Views
3K
What Is the Dipole Moment of a Paired Charged Ring System?
Replies
1
Views
2K
How to calculate the dipole moment of the spherical shell?
Replies
1
Views
8K
Permanent Dipole - Permanent Dipole Interaction Derivation
Replies
1
Views
3K
How Does Dipole-Dipole Interaction Affect H₂ Molecule's Ground State Energy?
Replies
1
Views
2K
Force between 2 parallel magnetic dipole moments
Replies
1
Views
4K
Understanding the Coordinate-Free Electric Field of a Dipole
Replies
1
Views
2K
I Question regarding how to interpret dipole moment for bound charges
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top