Electrostatic Potential in Dielectric Medium

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SUMMARY

The discussion focuses on finding the Green's function for a dielectric sphere with permittivity \(\epsilon_1\) embedded in another dielectric medium with permittivity \(\epsilon_2\) using the method of images. The relevant equation provided is \(\phi=\frac{q}{\epsilon|r-r1|}\) in Gaussian units. The symmetry of the problem suggests that the image charge should be positioned along the axis between the external charge and the center of the sphere. However, the participants express uncertainty regarding the appropriate boundary conditions for this configuration.

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  • Understanding of dielectric materials and their properties
  • Familiarity with the method of images in electrostatics
  • Knowledge of Gaussian units in electromagnetism
  • Basic principles of Green's functions in physics
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  • Explore Green's functions in electrostatics, specifically for spherical geometries
  • Examine the implications of permittivity variations in electrostatic problems
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fuchini
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Homework Statement


I need to find the green function for a dielectric sphere ([itex]\epsilon_1[/itex]) inside another dielectric medium ([itex]\epsilon_2[/itex]) using the method of images.

Homework Equations


In gaussian units I have: [tex]\phi=\frac{q}{\epsilon|r-r1|}[/tex]

The Attempt at a Solution


Due to the symmetry of the problem, the image charge would be located in the axis between the charge and the sphere's center. I don't know what would the boundary conditions be.
 
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fuchini said:

Homework Statement


I need to find the green function for a dielectric sphere ([itex]\epsilon_1[/itex]) inside another dielectric medium ([itex]\epsilon_2[/itex]) using the method of images.

Homework Equations


In gaussian units I have: [tex]\phi=\frac{q}{\epsilon|r-r1|}[/tex]

The Attempt at a Solution


Due to the symmetry of the problem, the image charge would be located in the axis between the charge and the sphere's center. I don't know what would the boundary conditions be.

Here's a web page that explains the boundary conditions across a dielectric:
http://www.ittc.ku.edu/~jstiles/220/handouts/Dielectric Boundary Conditions.pdf
 

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